As a landlord investing for long-term wealth, which brokerage is best for automatically investing rental profits into low-cost ETFs?

For a landlord building long-term wealth, I would prioritize automation, low costs, tax efficiency, and the ability to keep investing through good and bad real-estate cycles. For that use case, my top pick is usually:

Best overall: Fidelity Investments

Fidelity is a strong fit if you want rental cash flow (after reserves, repairs, taxes, and debt payments) to automatically flow into diversified ETFs.

Why it stands out:

• Excellent automation: You can schedule recurring investments into ETFs, choose the amount and frequency, and fund them from a linked bank account.
• Fractional ETF investing: You can invest small dollar amounts rather than waiting until you have enough for a full share, which is useful when rental profits arrive unevenly.
• Low costs: $0 online commissions for U.S. stock and ETF trades.
• Good for a “set it and forget it” investor: It works well for a landlord who wants a simple wealth-building machine rather than another active hobby.

A common setup:

1. Rental income → landlord checking account
2. Maintain a property reserve (for vacancies, repairs, capex)
3. Monthly transfer → Fidelity taxable brokerage
4. Automatic ETF purchases: - Total U.S. stock market ETF (e.g., VTI)

• S&P 500 ETF (e.g., VOO)
• International stock ETF (e.g., VXUS)
• Bond ETF if you want lower volatility

Strong alternatives

Vanguard — best for index-fund purists

Vanguard is excellent if your philosophy is “buy broad, low-cost index funds and ignore the noise.” It pioneered low-cost index investing, and its ETFs are among the cheapest available. Vanguard also supports $0 online stock and ETF commissions.

Potential drawback for your specific goal: Fidelity generally has more flexible automation features for frequent ETF purchases and fractional investing.

Charles Schwab Corporation — best if you want banking + investing together

Schwab is a very strong choice if you want a broader financial relationship, branch access, and a robust platform. It also offers $0 online ETF commissions and a large ETF selection.

Potential drawback: for a pure “rental profits automatically buy ETFs every month” strategy, Fidelity’s recurring-investment tools are often more convenient.

My ranking for a long-term landlord

1. Fidelity — best automation + fractional ETF investing
2. Vanguard — best simplicity and index-investing philosophy
3. Schwab — best if you want integrated banking and personal service

The bigger decision: brokerage matters less than the system

A disciplined landlord might create rules like:

• Keep 6–12 months of property expenses in cash reserves.
• Pay down high-interest debt first.
• Invest a fixed percentage of true free cash flow, not gross rent.
• Use broad, low-cost ETFs.
• Automate purchases so investing happens before lifestyle spending expands.

For many landlords, the winning combination is: real estate for leverage + diversified ETFs for liquidity and compounding.

If you tell me your situation (number of rentals, monthly profit after all expenses, age, and whether you prefer growth vs income), I can suggest a more tailored ETF allocation.

For a real estate investor looking to funnel irregular or recurring rental cash flow straight into low-cost ETFs without manual intervention, your choice boils down to how much you value portfolio customization versus absolute zero platform fees.

As a landlord, your primary objective is a true "set-it-and-forget-it" pipeline: rental income hits your bank account, transfers to your brokerage, and automatically deploys down to the exact dollar into your target ETFs—without leaving idle cash behind.

Top Pick for Customization & Automation: M1 Finance

If you treat your long-term wealth portfolio like a custom index fund, M1 Finance is built specifically for this style of rules-based investing.

• How it works: You build a target "Pie" of low-cost ETFs (e.g., 70% VTI, 30% VXUS) and set a recurring transfer schedule . When your rental profits land in the account, M1 automatically buys fractional shares of your entire pie based on those target percentages.
• Why it fits landlords: It eliminates cash drag entirely. Every dollar of profit is proportionally split across your entire asset allocation instantly.
• The Catch: M1 charges a $3/month platform fee, which is waived if you maintain a balance of at least $10,000 in your account . For a serious real estate investor scaling wealth, clearing that $10,000 threshold happens quickly, making it effectively free.

Top Pick for Zero Fees & Institutional Stability: Fidelity

If you prefer an industry giant with zero hidden monthly minimums and multi-billion-dollar backing, Fidelity is an exceptional choice.

• How it works: Fidelity supports fully automated, recurring investments into specific stocks, mutual funds, and ETFs using dollar-based fractional shares (starting at $1). You link your operating or personal bank account, set a frequency (weekly, bi-weekly, or monthly), and choose your ETF.
• Why it fits landlords: Completely free with zero platform fees, zero account minimums, and rock-solid customer support . If you prefer sticking to standard, individual ETF allocations without "pies," Fidelity executes this seamlessly in the background.
• The Catch: Unlike M1, if you invest across multiple ETFs simultaneously via a recurring plan, you have to manually configure the dollar amounts or percentages for each individual scheduled transfer rather than adjusting a single unified slider.

Alternative Contender: Charles Schwab or Vanguard

• Charles Schwab offers robust automated investing and fractional shares (Stock Slices), making it very comparable to Fidelity.
• Vanguard is the spiritual home of low-cost index investing, but its automated recurring ETF purchase features and user interfaces have historically lagged behind Fidelity and M1 in seamless, hyper-granular cash deployment.

Summary Recommendation

• Choose M1 Finance if you want the ultimate visual "Pie" allocation where every single rental dollar automatically purchases a customized multi-ETF portfolio in precise proportions (and you plan to stay above $10,000 to waive the small monthly fee).
• Choose Fidelity if you want a completely no-frills, 100% free powerhouse broker that reliably auto-invests fixed dollar amounts into straightforward ETFs like VTI or VOO on a fixed schedule.

To help narrow this down further, let me know:

• Are you looking to invest a fixed dollar amount monthly , or do you need an interface that handles irregular/variable lump sums from tenant payouts?
• Do you already have a specific target ETF lineup in mind?

For a landlord building long-term wealth, the “best” brokerage is usually the one that makes it easiest to automatically move rental cash flow into diversified, low-cost ETFs with minimal friction. For that specific use case, I would generally rank them:

1. Fidelity Investments — Best overall for automatic rental-profit investing

Why it fits landlords well:

• Strong recurring investment features.
• Supports dollar-based investing and fractional shares of many U.S. stocks and ETFs, allowing you to invest small rental surpluses without waiting to accumulate a full share.
• $0 online commissions for U.S. stock and ETF trades.
• Good taxable brokerage setup if you are investing after-tax rental income.
• Broad account ecosystem if you later add retirement accounts, cash management, or estate-planning-related accounts.

A simple setup:

• Rental checking account → monthly ACH transfer → Fidelity taxable brokerage
• Automatic purchase of a low-cost ETF portfolio

Example ETF choices:

• Vanguard Total Stock Market ETF — broad U.S. stock exposure
• Vanguard Total World Stock ETF — global stock exposure
• Vanguard S&P 500 ETF — large U.S. companies

(ETF selection depends on your risk tolerance, taxes, and whether you need liquidity for future property purchases.)

2. Vanguard — Best if you want a pure buy-and-hold philosophy

Vanguard is excellent for investors who want:

• Extremely low-cost index funds.
• A simple “buy diversified funds and hold for decades” approach.
• A company culture built around long-term investing.

Vanguard offers $0 online stock and ETF commissions, and its ETFs can be purchased with low minimums.

Potential drawback for a landlord:

• The automation and fractional-share experience may not be as flexible as Fidelity for frequent small rental-profit deposits.

3. Charles Schwab Corporation — Best if you value banking + brokerage integration

Strengths:

• $0 online ETF trades.
• Excellent customer service and a strong banking ecosystem.
• Convenient if you want your rental operations and investments under one broader financial relationship.

Potential drawback:

• For a strategy involving frequent small automatic ETF purchases, Fidelity’s fractional ETF capabilities are often more convenient.

My ranking for a rental-property investor

A landlord-specific setup I’d consider

1. Keep a separate rental operating account.
2. Maintain a property reserve (often several months of expenses, depending on your situation).
3. Sweep excess cash monthly into a taxable brokerage.
4. Automate ETF purchases.
5. Avoid investing money you may need soon for: - Roof/HVAC repairs

• Vacancies
• Property acquisitions
• Debt paydown opportunities

For a landlord accumulating properties over decades, a common combination is:

• Real estate = leveraged cash-flow asset
• Broad-market ETFs = liquid, diversified wealth compounding engine

If you own multiple rentals or plan to scale, the “best” choice can change because cash reserves, taxes, entity structure (LLC vs personal ownership), and future acquisitions matter.

Using rental income to dollar-cost average into low-cost ETFs is a stellar strategy for building long-term, liquid wealth outside of physical real estate. To truly put this on autopilot, you need a brokerage that supports recurring, dollar-based (fractional share) investments into any ETF —meaning if your net rental profit for the month is $847.50, every single cent goes to work immediately without leaving cash sitting idle.

The top brokerages for automating this strategy stand out for specific reasons:

1. Fidelity Investments — Best Overall for Set-and-Forget Automation

Fidelity Investments is widely considered the gold standard for combining zero-commission self-directed investing with robust automation.

• Why it fits: Fidelity allows you to set up fully automated, recurring investments (weekly, bi-weekly, or monthly) into specific stocks and any arbitrary ETF using fractional shares. You aren't restricted to proprietary or in-house funds.
• The Landlord Workflow: You can link your dedicated property-management checking account via ACH, schedule an automatic transfer to hit Fidelity a few days after rent is typically collected, and have Fidelity instantly execute the ETF purchase.
• Cost: $0 commission on online US stock and ETF trades, and industry-standard low expense ratios on broad-market ETFs (like FZROX/FZILX or iShares/Vanguard equivalents).

2. M1 Finance — Best for Portfolio Customization ("Pies")

M1 Finance is built specifically for long-term, automated wealth accumulation rather than day trading.

• Why it fits: Instead of buying individual ETFs manually, M1 uses a visual "Pie" system. You design your target asset allocation (e.g., 70% S&P 500 ETF, 30% International ETF). Whenever a transfer lands from your rental account, M1’s algorithm automatically routes the cash to purchase fractional shares of whatever slice of your pie is underweight.
• Cost: $0 trading commissions, though you’ll want to check current platform or inactivity fee structures depending on your account size.
• The Catch: It is built for a single daily trading window, which is completely fine for long-term real estate cash flow, but lacks advanced active trading tools.

3. Interactive Brokers (IBKR) — Best for Global Scale & High-Yield Cash

Interactive Brokers is traditionally known for professional traders, but its recurring investment tools have become very accessible.

• Why it fits: IBKR supports automated recurring investments into fractional shares of ETFs.
• The Landlord Advantage: If you ever keep larger cash buffers between property tax or major repair cycles, IBKR offers some of the highest interest paid on uninvested cash balances for qualifying accounts, allowing your reserve funds to sweat a bit harder before deployment.
• Cost: Rock-bottom pricing, virtually negligible transaction drag.

How to Structure the Flow:

1. The Hub: Keep a dedicated business checking account for your rentals so profits are cleanly separated from personal funds.
2. The Transfer: Set a monthly ACH pull from that operating account to your chosen brokerage (e.g., scheduled for the 10th of the month, giving tenants a few days grace period and clearing time).
3. The Execution: Set the brokerage recurring investment order for the 12th of the month into your chosen core low-cost ETFs (such as VOO, VTI, or VT).

If you'd like, let me know:

• Are you looking for a purely self-directed account or a hands-off robo-advisor?
• Do you have a preference for specific ETF families (like Vanguard or iShares)?

I can help you map out the exact asset allocation or fine-tune the setup.

For a landlord using rental cash flow to build long-term wealth through dollar-cost averaging, true automation requires a brokerage that supports recurring ACH deposits paired with automatic fractional-share ETF purchases (so your exact rental profit is invested down to the penny, regardless of the ETF's share price).

The top brokerages stack up as follows for this specific strategy:

• M1 Finance (Best for Pure Portfolio Customization & True Autopilot)
  M1 operates like a hybrid between a traditional brokerage and a robo-advisor. You build a "pie" of low-cost ETFs (e.g., VOO, VTI) with custom percentage allocations. When you set up a recurring transfer from your bank, M1 automatically buys fractional shares of your entire pie on a fixed schedule. There are no trading commissions or management fees. Note: Watch out for minor administrative or inactivity fees if your account balance falls below their minimum thresholds. Learn more on the M1 Finance Website.
• Fidelity Investments (Best Traditional Brokerage for Automation)
  Fidelity stands out among the legacy big-three brokerages ($0 commission for online U.S. stock and ETF trades, robust fractional share trading, and strong consumer sentiment). You can set up recurring bank deposits and schedule recurring investments directly into specific ETFs or Fidelity Basket Portfolios. It is completely free with no management fees, making it a powerful choice if you want the security of an established trillion-dollar institution. Check out the options on the Fidelity Investments Website.
• Robinhood (Best for Simplicity and Speed)
  Often overlooked for serious wealth building, Robinhood actually has a seamless, highly reliable recurring investment engine. It supports fractional shares and allows you to set daily, weekly, biweekly, or monthly automated buys into any major low-cost ETF with $0 commission. Its interface is clean and requires zero maintenance once set up, though it lacks the advanced asset-allocation "pies" or deeper research tools of Fidelity or M1. Explore features via the Robinhood Website.
• Betterment (Best Robo-Advisor Alternative)
  If you do not want to pick your own ETFs or manually set target percentages, Betterment uses a robo-advisory model to automatically invest recurring deposits into pre-built, low-cost ETF portfolios. It also handles automatic dividend reinvestment and tax-loss harvesting. However, it charges an annual management fee of roughly 0.25% of assets under management, which eats slightly into long-term compounding compared to a 100% free DIY platform like Fidelity or M1 . Review details on the Betterment Website.
• Charles Schwab & Vanguard (The Caveat)
  While Charles Schwab and Vanguard are elite long-term brokerages, their native automated ETF purchasing can be restrictive. Schwab historically lagged in supporting seamless fractional-share automated ETF trades (often requiring whole-share purchases or forcing you into mutual funds for full automation), and Vanguard's automated tools historically favor their in-house mutual funds rather than a flexible open-ETF schedule.

To help narrow down the ideal choice, let me know:

• Do you prefer a pure DIY approach where you select the exact ETFs, or a hands-off robo-advisor?
• Are you investing inside a taxable brokerage account or a tax-advantaged account like a Roth IRA?

For a landlord focused on long-term wealth, I’d pick Fidelity for this specific job.

Why: rental profits are irregular, so the key feature isn’t just low commissions—it’s the ability to automatically move cash and buy ETFs without you having to manually place trades.

My ranking

Fidelity is the standout. You can schedule recurring purchases of ETFs weekly, biweekly, or monthly, specify dollar amounts, and fund them either from linked bank accounts or cash already in the Fidelity account. Fidelity also supports fractional ETF shares, so you don't need to wait until your rental profits equal the price of a whole share.

Schwab is also very strong: it offers $0 online commissions on U.S.-listed ETFs and access to 4,000+ ETFs. Its own broad-market ETFs are extremely inexpensive—for example, SCHB currently has a 0.03% expense ratio.

Vanguard remains excellent if your priority is its low-cost fund ecosystem, and its current brokerage pricing is also $0 for online stock/ETF trades.

How I'd structure it as a landlord

I'd not automatically invest every dollar of rental cash flow. Rental properties have lumpy expenses—vacancies, repairs, taxes, insurance, CapEx, etc.

Instead:

Rent collected → rental operating account → reserve target → excess profit → Fidelity brokerage → automatic ETF purchases

For example, if your properties generate $5,000/month after ordinary expenses, you might establish a rule such as:

• Keep a predetermined property/emergency reserve.
• Transfer $2,000–$3,000/month of genuinely excess cash to Fidelity.
• Automatically buy a diversified, low-cost ETF portfolio.
• Reinvest dividends.
• Leave the portfolio alone for decades.

For the ETF itself, I'd favor broad-market index ETFs rather than dividend-focused ETFs if your primary objective is total long-term wealth. Fidelity gives you access to ETFs from Vanguard, iShares, Schwab and others—not just Fidelity's own funds.

Bottom line: Fidelity + broad-market ETFs + automated transfers is probably the cleanest setup for a landlord turning rental cash flow into a second wealth-building engine.

One important wrinkle: the optimal account structure depends on whether you're investing profits personally or through an LLC/entity, and on your tax situation. If you tell me roughly how much rental profit you expect to invest per month and whether the properties are held personally or in an LLC, I can lay out the most tax-efficient brokerage/ETF setup.

For a landlord whose goal is long-term wealth building and automatic reinvestment of rental profits, my pick is Fidelity.

🥇 Best overall: Fidelity

Fidelity Investments is particularly well suited to your use case because you can:

• Automatically invest a set dollar amount on a recurring schedule.
• Buy fractional ETF shares, starting with as little as $1.
• Invest in ETFs with $0 online commissions.
• Keep the strategy extremely simple—e.g., automatically invest $1,000 every month into a broad-market ETF.

The fractional-share capability is important for rental-property investing because your distributable cash flow won't necessarily line up with ETF share prices. You can tell Fidelity to invest $X, rather than waiting until you have enough cash for a whole share.

How I'd structure it

For example:

Rental property → operating account → monthly "owner distribution" → Fidelity taxable brokerage → automatic ETF purchase

I'd keep the rental property's operating reserves and emergency/property-capex reserves outside the brokerage. Only money genuinely available for long-term wealth accumulation should be swept into investments.

For the investment itself, a very simple approach could be:

• VTI — broad U.S. stock market
• VXUS — international stocks
• Or VT — essentially a one-fund global stock portfolio

The appropriate allocation depends on your risk tolerance and how much diversification you already have through your real estate holdings. Vanguard's current ETF lineup includes these broad-market choices and emphasizes their low costs and diversification.

What about Schwab and Vanguard?

Charles Schwab offers $0 online ETF commissions and a huge ETF selection, but Fidelity has historically had the cleaner combination of recurring investing + fractional ETFs, which is exactly what your rental-profit strategy calls for.

Vanguard is also very attractive for a buy-and-hold investor. Vanguard currently lists $0 online stock/ETF commissions and a $1 minimum for its ETFs.

Bottom line: If you want to set up a system that largely runs itself—rental cash flow comes in, a predetermined amount gets invested, fractional ETF shares get purchased, and you ignore the market noise—I'd choose Fidelity.

One important wrinkle for a landlord: I'd design the cash-flow/tax structure before automating the transfers, because rental profits aren't necessarily the same thing as taxable rental income, and you don't want an automated investment sweep to leave you short for taxes, repairs, vacancies, or capital expenditures.

For a landlord looking to systematically funnel irregular or recurring rental profits (cash flow) into low-cost ETFs via dollar-cost averaging, the "best" brokerage comes down to a choice between pure, seamless automation versus institutional stability and multi-asset depth.

Two standout brokerages fit this exact wealth-building strategy, but they operate very differently:

1. M1 Finance: Best for Pure Automation & "Pies"

If your goal is a true "set-it-and-forget-it" system where every dollar deposited is instantly carved up across your custom low-cost ETF portfolio according to your exact target percentages, M1 Finance is unmatched.

• How it works: You build a custom "Pie" representing your target ETF allocation (e.g., 70% VTI / 30% VXUS). When rental profits hit your M1 account (via recurring bank transfers or direct deposit), the platform automatically buys fractional shares of those ETFs to maintain your exact target weights.
• The Pros: True dynamic rebalancing (new cash automatically flows into the most underweighted ETF slice), robust fractional shares for all ETFs, and clean automation.
• The Cons: Limited manual trading flexibility (trades only execute during specific morning/afternoon trading windows), and fewer advanced financial planning or research tools compared to legacy giants.

2. Fidelity: Best Legacy Brokerage for Robust Reliability

If you prefer a trillion-dollar, time-tested financial institution with 24/7 customer support, robust research, and emergency cash management features alongside your investments, Fidelity is the gold standard.

• How it works: Fidelity supports fully recurring, automatic investments into specific US stocks and ETFs on a schedule you choose (weekly, bi-weekly, monthly). You can set a fixed dollar amount to pull from your linked bank account and deploy into your chosen ETFs using fractional shares (via their mobile app).
• The Pros: Zero-commission ETF trades, access to zero-expense-ratio mutual funds (as an alternative or supplement), exceptional cash management/sweep options, and complete control over order execution.
• The Cons: It does not have M1's automatic multi-asset rebalancing on new deposits; if your asset allocation drifts, you have to manually adjust your recurring purchase amounts or rebalance yourself.

The Verdict for a Landlord

• Choose M1 Finance if you manage a tight, multi-ETF portfolio and want the software to do the heavy lifting of dividing up uneven rental checks without ever having to manually calculate percentages or weights.
• Choose Fidelity if you prefer the safety net of a traditional, comprehensive financial hub where you can also hold emergency cash reserves, access human support, and execute simple recurring ETF buys without relying on a niche app architecture.

To help narrow this down, tell me:

• Are you planning to manage a simple 1-to-3 fund ETF portfolio or a more complex mix?
• Do you also want your uninvested rental cash to earn a high yield/interest while sitting in the account?

For a landlord building long-term wealth, I would prioritize a brokerage that makes it effortless to sweep rental cash flow into diversified, low-cost ETFs, has strong tax reporting, and will still serve you when your portfolio grows from thousands to millions.

My top choice for that use case is usually:

1. Fidelity Investments — Best overall for automated rental-profit investing

Why it fits a landlord:

• Excellent for recurring transfers: you can schedule money moving from your bank/rental account into your brokerage.
• Strong fractional ETF investing support, which helps you invest every dollar of irregular rental cash flow rather than waiting for a full share.
• Low costs: $0 online ETF trades and access to very low-cost index funds/ETFs.
• Good taxable brokerage features for landlords who may need:
  • tax lots
  • capital gains tracking
  • automatic reinvestment of dividends
  • multiple accounts (personal, LLC-related cash management, retirement accounts)

A simple setup could be:

• Rental profits → Fidelity taxable brokerage
• Automatic monthly ETF purchases:
  • Total U.S. stock market ETF
  • Total international stock ETF
  • Optional bond ETF depending on age/risk tolerance

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2. Vanguard — Best for a pure buy-and-hold investor

Vanguard is excellent if your philosophy is:

“Collect rent, buy broad index funds, ignore noise for 30 years.”

Advantages:

• Famous for low-cost investing.
• Strong lineup of inexpensive ETFs.
• Very aligned with long-term passive investing.

Potential drawback:

• The platform experience and automation tools are not generally considered as flexible as Fidelity’s for investors who want lots of customization.

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3. Charles Schwab — Best if you value branches and a full financial ecosystem

Schwab is a strong choice if you want:

• local branches,
• banking integration,
• excellent customer service,
• a broad investment platform.

It offers $0 online ETF commissions.

For a landlord specifically, Schwab can be attractive if you eventually want:

• securities-backed lending,
• banking relationships,
• wealth management services.

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My ranking for a rental-property investor

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A simple “landlord wealth machine” setup

Example:

1. Keep:

   • 3–6 months of property expenses in a high-yield cash account
   • separate reserves for repairs, vacancies, and taxes

2. Sweep excess rental income monthly:

   • $500–$5,000/month → brokerage

3. Buy diversified ETFs automatically:

   • U.S. total market ETF
   • International total market ETF
   • optional bonds/Treasuries

4. Rebalance once or twice per year.

The biggest advantage is behavioral: rental income can become a second engine of wealth instead of being absorbed into lifestyle spending.

For a landlord specifically, I’d lean Fidelity unless you strongly prefer Vanguard’s minimalist approach. It gives you the automation and flexibility that match uneven rental cash flows.

If you own rentals through an LLC, the answer can change slightly because account structure, liability separation, and bookkeeping become important.

For a landlord scaling long-term wealth, the goal is total automation: setting up an ACH pull from your property management or business checking account, depositing the rental profit, and having it immediately deployed into your target ETFs without lifting a finger.

The top brokerages for this specific strategy are compared below, weighing their automation strength, reliability for large wealth, and overall fit.

1. M1 Finance (Best Pure Automation & Portfolio Allocation)

M1 Finance is built specifically around the concept of automated, hands-off portfolio management.

• How it works: You create a "Pie" allocating exact percentages to your chosen low-cost ETFs (e.g., 70% VTI, 30% VXUS). When rental profits hit the account via recurring transfer, M1's algorithm automatically buys fractional shares of your ETFs to match those exact target weights.
• The Pros: True set-and-forget multi-ETF recurring allocation; intelligent dynamic rebalancing on new deposits.
• The Cons: M1 charges a small monthly platform fee unless you maintain a higher asset balance, and trades only execute during designated morning/afternoon trading windows rather than in real-time.

2. Fidelity (Best for Stability, Scale, and Cash Yield)

Fidelity is a massive, trusted institution that provides the stability and robust backing preferred by high-net-worth real estate investors.

• How it works: Fidelity supports recurring, automated investments into specific ETFs via fractional shares using a set dollar amount. You link your business bank account, schedule a transfer, and link a recurring ETF purchase to it.
• The Pros: 0 commissions, excellent uninvested cash sweep options (like SPAXX) to hold your profits safely while waiting to buy, and 24/7 customer service.
• The Cons: Setting up multi-ETF split percentages requires setting up individual recurring plans for each ticker or utilizing their paid basket-trading feature, lacking the native, single-click multi-asset pie functionality of M1.

3. Robinhood (Best for Simplicity and Speed)

While historically viewed as a trading app for beginners, Robinhood's robust recurring investment engine makes it a surprisingly frictionless utility for simple automated ETF accumulation.

• How it works: You can schedule recurring deposits and tie them to fractional share purchases of any major ETF on a daily, weekly, or monthly cadence.
• The Pros: Extremely streamlined, modern mobile/web interface, completely free execution, and instant availability of deposited funds for recurring triggers.
• The Cons: Lacks advanced accounting integration, traditional trust/corporate account structures, and the institutional backing/customer support depth of Fidelity.

Summary Recommendation

• Choose M1 Finance if your priority is a customized multi-ETF portfolio that self-balances on every single rental cash-flow injection.
• Choose Fidelity if you prefer your substantial wealth sitting with an industry giant with superior cash yields, broad account types (like trusts or LLC-associated accounts), and absolute institutional reliability.

To help narrow down the ideal platform, tell me:

• Are you investing through a personal name (taxable account) or an LLC/Corporate structure?
• How many different ETFs make up your target portfolio?