what's a simple billing software I can use?

Here are a few of the simplest and most user-friendly billing and invoicing software options, depending on whether you want something completely free, mobile-friendly, or strictly focused on invoices without heavy accounting clutter:

• Invoice Ninja - Great for a clean, focused invoicing experience without complex accounting features. It lets you create branded invoices, track time, set up recurring billing, and accept online payments via Stripe or PayPal. It offers a free tier for a small number of clients.
• Zoho Invoice - A completely free, feature-rich online tool designed specifically for small businesses to create professional invoices, track client payments, and automate payment reminders without forcing you into a full accounting suite.
• Invoice2go - Ideal if you run your business from your phone and need a mobile-first, highly visual app to quickly whip up estimates and invoices on the go.
• Square Invoices - Perfect if you already use or want a simple starter tool for getting paid. It’s straightforward, lets clients pay directly from an email link, and is ideal for basic or recurring billing.
• Invoicely - A straightforward cloud-based platform that handles time tracking, basic expenses, and customizable online invoicing with a clean and fuss-free free tier.

To help narrow down the best fit, tell me:

• Are you looking for a free option or a paid plan?
• Do you need to track billable hours/time , or just send flat-rate invoices?
• Do you prefer a mobile app or a desktop dashboard?

If you mean simple invoicing/billing for a small business, I’d narrow it down to these:

• waveapps.com — Best simple/free option. The Starter plan is $0 and includes unlimited invoices, estimates, bills, and basic bookkeeping.
• squareup.com — Best if you also take payments. You can send unlimited invoices with no monthly subscription on the Free plan, and customers can pay online.
• quickbooks.intuit.com — Best if you want accounting too. It handles invoices, expenses, reports, bank transactions, and taxes, but it's more complicated and currently starts at $38/month before promotional discounts.
• freshbooks.com — Best for freelancers/service businesses. It's particularly focused on invoicing, estimates, expenses, and getting paid.

My pick: If you just want to make invoices, send them to customers, track who's paid, and keep things easy, start with Wave. If you need to accept card payments or already use Square, I'd choose Square.

If you tell me what kind of business you have (e.g. contractor, cleaning, trucking, retail, consulting) and roughly how many invoices you send per month, I can recommend the simplest one for your situation.

If you want simple billing/invoicing without a lot of accounting complexity, I’d start with waveapps.com.

• Wave — Best simple/free option. The Starter plan is $0, with unlimited estimates and invoices. You can also let customers pay directly from the invoice.
• quickbooks.intuit.com — Better if you want billing plus full bookkeeping, expenses, reports, and tax/accounting features. Its Simple Start plan is currently listed at $38/month before promotional discounts.
• freshbooks.com — A good middle ground if you're a freelancer or service business and want polished invoices and client management.

My pick: If all you need is “make an invoice → send it → get paid → keep track of who owes me,” use Wave. It's hard to beat for simplicity and cost.

If you tell me what kind of business you have and roughly how many invoices you send per month, I can narrow it down to the best 1–2 options for you.

If you want something straightforward that won't overwhelm you with heavy accounting features, here are some of the simplest and most user-friendly billing and invoicing options available:

• Square Invoices is great if you want an absolute breeze of a setup. It lets you quickly send professional invoices, set up recurring billing, and easily accept online payments without messing with a complicated backend.
• Zoho Invoice is a clean, intuitive, and budget-friendly tool designed specifically for small operations. It focuses heavily on estimates, customer management, and sending out clean invoices without a steep learning curve.
• Invoicely is built purely for minimal fuss. If you just need a fast way to create, send, and track online invoices and basic expenses without being bogged down by full-scale accounting software, it's a solid, lightweight pick.
• ZipBooks offers a very clean, modern, and fuss-free design. It keeps things visually clear and lets you spin up and send professional invoices in just a couple of minutes.

To help me narrow down the best fit, tell me:

• Do you need to accept credit cards/online payments directly through the invoice?
• Is this for one-time projects or recurring monthly billing?

If you want something straightforward that won't overwhelm you with heavy accounting features, here are the best simple, user-friendly billing and invoicing options broken down by what they do best:

• Wave — Best truly free option for basic invoicing and light accounting . It offers unlimited invoicing with no caps , lets you customize professional templates , and only charges you when a client pays via an online credit card . Check it out on Wave Invoicing.
• Zoho Invoice — Best for zero cost with extra features . It is completely free for up to a generous number of invoices/customers , and includes handy extras like time tracking, multi-currency support, and automated payment reminders . See the tool on Zoho Invoice.
• Square Invoices — Best for mobile-first or mixed in-person/digital billing . It lets you send quick digital invoices via text or email , makes it dead-simple for clients to pay on their phones , and syncs seamlessly if you ever take in-person card payments . Explore features on Square Invoices.
• FreshBooks — Best if you want ultimate ease-of-use and bill for your time . It’s not free , but it is famously intuitive —allowing you to track billable hours , automate follow-ups , and look polished with almost zero setup time . Check out the platform on FreshBooks.
• Invoice Simple — Best for a no-nonsense mobile app . If you literally just need to tap out a PDF invoice on your phone and text or email it to a client while standing at a job site, it's one of the fastest apps for that specific workflow. Look it up on the Invoice Simple Google Play Page.

If you want to narrow this down, let me know:

• Do you need it to be 100% free?
• Are you billing for products, hourly services, or projects?
• Do you need to track expenses or accounting too, or just send invoices?

If you mean simple invoicing/billing for a small business, I’d start with Square Invoices.

My quick picks

• Square Invoices — best overall for simplicity. Free monthly plan, unlimited invoices, recurring billing, estimates, automatic reminders, and customers can pay online.
• QuickBooks Online — best if you also need bookkeeping/accounting. More powerful, but more complicated than you may need if all you want is billing.
• FreshBooks — good for service businesses/freelancers. Especially useful if you need time tracking, expenses, and professional invoices.
• Wave — good if you want something very basic and inexpensive. Worth considering if you primarily need invoices and payment tracking.

If I were setting up a business from scratch and just wanted to send customers bills and get paid, I'd pick Square. You can send invoices by email/text/link, accept cards and ACH, and set up recurring invoices.

For Square's free plan, there isn't a monthly subscription fee; payment processing fees apply when customers pay. Current U.S. invoice/card processing is 3.3% + $0.30, while ACH is 1% with a $1 minimum.

If you tell me what kind of business you have (contractor, cleaning, consulting, landscaping, rental, etc.) and roughly how many invoices you send per month, I can narrow it down to the simplest/cheapest choice.

Finding a simple billing software depends on whether you just need to send basic invoices or if you also want to track expenses, accept online payments, or manage clients. Here is a curated list of simple, user-friendly billing and invoicing tools:

• Wave — Excellent free invoicing and basic accounting for freelancers and small businesses. It offers unlimited invoicing and receipt scanning, with pay-per-use processing fees if you want clients to pay via credit card or bank transfer.
• FreshBooks — Highly intuitive and designed specifically for service-based businesses and freelancers. It makes tracking time, sending polished invoices, and managing expenses remarkably straightforward.
• Invoice Ninja — A lightweight, open-source option that provides robust free tier features for up to a certain number of clients. It supports online payments, client portals, and time tracking.
• Square Invoices — Great if you already use or want a simple mobile-friendly system. It lets you send free invoices from your phone or computer, with a transparent per-transaction fee when paid online.
• PayPal Invoicing — A fast, no-fuss choice if you and your clients already use PayPal . There's no monthly fee; you just pay standard transaction fees when the invoice is paid.

To help me recommend the absolute best fit , let me know:

• Are you looking for something completely free , or do you have a budget?
• Do you need advanced features like time tracking, inventory, or expense management, or just basic invoicing?

If you mean simple invoicing/billing for a small business, I’d look at these:

• Wave — probably the simplest starting point. The free Starter plan includes unlimited invoices, estimates, bills, and basic bookkeeping.
• Square Invoices — great if you want customers to pay directly from the invoice. The free plan supports unlimited invoices and recurring invoices; you pay processing fees when customers pay online.
• QuickBooks Online — better if you want invoicing + accounting + expense tracking + tax/reporting all in one. Simple Start is currently listed at $38/month before its promotional discount.

My pick: If all you need is “make an invoice → email it → get paid → keep track of what's outstanding,” I'd start with Wave. If you want customers to pay by card/ACH right from the invoice, Square is especially easy.

If you tell me what kind of business you have (contractor, cleaning, consulting, landscaping, online business, etc.) and roughly how many invoices you send per month, I can narrow it down to the best one.

Finding a simple billing software depends on whether you just need to send basic invoices or also track expenses, accept online payments, or manage clients. Here are some of the best, user-friendly options available:

• Wave — A fantastic, truly free option for freelancers and micro-businesses. It handles invoicing, basic accounting, and receipt scanning, with pay-per-invoice online payment processing.
• FreshBooks — Known for being extremely intuitive and user-friendly. It is ideal for service-based businesses, offering great time tracking, automated recurring invoices, and easy client payment portals.
• Invoice Ninja — An open-source, highly customizable tool with a generous free tier. It allows you to brand your invoices, track tasks, and accept payments through a wide variety of gateways.
• Square Invoices — Perfect if you already use Square for card processing or want a straightforward mobile-first solution. It has a robust free plan where you only pay transaction fees when clients pay online.
• Zoho Invoice — A completely free, feature-rich tool for small businesses that need multi-currency support, automated payment reminders, and clean, professional templates without a steep learning curve.

If you'd like, let me know:

• What is your business type (freelance, retail, agency, etc.)?
• Do you need free software or are you willing to pay for advanced features?
• Do you need it to handle online credit card payments?

I can narrow this down to the exact best fit for your workflow.

If you want simple billing/invoicing without a lot of accounting complexity, I’d look at these:

1. Zoho Invoice — my pick for simplest/free

   • $0
   • Create and email invoices
   • Recurring invoices
   • Payment reminders
   • Online payments
   • Quotes and expense tracking
   • Good if you're a freelancer or small service business.

2. Wave — best if you want billing + basic bookkeeping

   • Free Starter plan
   • Unlimited invoices and estimates
   • Customer/payment tracking
   • Mobile app
   • Paid Pro plan adds bank transaction importing, receipt capture, and automated reminders.

3. FreshBooks — easiest polished option

   • Particularly good for freelancers and service businesses
   • Strong invoicing, expenses, time tracking, and client management
   • More expensive than the free options.

4. Zoho Billing — if you have subscriptions

   • Better suited to recurring/subscription billing
   • Standard starts at $50/month, or $39/month when billed annually.

My recommendation: Start with Zoho Invoice if all you need is “make an invoice → send it → get paid → know who still owes me.” It's free and surprisingly capable.

If you tell me what kind of business you have and roughly how many invoices you send per month, I can narrow it down to the best 1–2 options for you.