Best Accounting Software for a One-Person Business (2026)

As a one-person business, you need accounting software that handles invoicing, expenses, and taxes without a finance degree — and without enterprise pricing. The best accounting software for a one-person business is the one you’ll actually use weekly, which usually means simple beats powerful.

Here’s how the top options compare for solos specifically, not the generic ‘small business’ reviews that assume you have a team.

The short answer: Wave (free) is the best value — full accounting and invoicing at $0. QuickBooks Self-Employed/Sole Trader ($15–$20/month) is best for tax-time ease with automatic mileage and quarterly estimates. FreshBooks ($19+/month) wins for service freelancers who live on invoicing. Xero is overkill for most solos.

The Picks for Solos

Wave: genuinely free accounting, invoicing, and receipt scanning — the rare free tier that’s actually complete. Double-entry accounting under the hood, professional invoices, automatic bank imports. Limitations: no mileage tracking, payroll costs extra, support is email-only. For a solo business with straightforward needs, it’s remarkable value at $0.

QuickBooks Self-Employed (now folded into QuickBooks Sole Trader in many regions, ~$15–$20/month): built for freelancers — automatic mileage tracking, quarterly tax estimates calculated for you, Schedule C categories. It’s the ‘tax time is painless’ option. FreshBooks ($19–$34/month): the invoicing champion — beautiful invoices, time tracking, late-payment reminders, client portal. If you bill hours or projects, FreshBooks pays for itself in faster payments. Xero ($15–$78/month): powerful but built for businesses with inventory and teams — most solos won’t use half of it.

• Wave: $0 — best free, complete accounting + invoicing
• QuickBooks Sole Trader: ~$15–$20/mo — best for tax ease + mileage
• FreshBooks: $19+/mo — best invoicing for service freelancers
• Xero: $15+/mo — powerful, usually overkill for solos
• Spreadsheets: $0 — fine under ~$20K revenue, then upgrade

What Solos Actually Need

Your requirements are simpler than the marketing suggests: invoicing that looks professional and tracks who’s paid, expense tracking with receipt capture (photo the receipt at purchase — 10 seconds now vs. archaeology later), bank/card transaction import and categorization, basic profit-and-loss reports, and tax-friendly categories (Schedule C lines). That’s it. Mileage tracking is a huge plus if you drive for business.

What you don’t need yet: payroll (no employees), inventory management (unless you sell physical products), multi-currency (unless you bill internationally), or multi-user access. Buy for today’s needs; every one of these tools lets you upgrade later. The expensive mistake is paying for complexity that makes you avoid the software — unused software at any price is the worst value.

The Weekly 15-Minute System

Software only works with a habit. Every Friday (or Monday — pick one): categorize the week’s imported transactions (10 minutes once you’re trained), photo any stray receipts, send any outstanding invoices and nudge overdue ones, and glance at the P&L. That’s it — 15 minutes keeps you perpetually ready for taxes, loan applications, and business decisions.

Monthly: reconcile against bank statements, review profit margin, set aside the tax percentage (25–30% of profit into the tax account). Quarterly: pay estimated taxes, review pricing and costs. This rhythm is what separates businesses with clean books from businesses with April panic — and it’s the foundation of handling taxes as a self-employed person without drama.

When to Upgrade or Switch

Upgrade triggers: hiring your first employee (need payroll — Gusto integrates with all of these), adding significant inventory, outgrowing the free tier’s limits, or needing a CPA to access your books (QuickBooks and Xero win on accountant familiarity). Switching tools is annoying but doable — export everything first, run parallel for a month, and switch at a quarter boundary.

One more consideration: your CPA’s preference matters. If you have (or plan to get) an accountant, ask what they work with — a CPA who lives in QuickBooks will serve you better on QuickBooks than on a tool they have to learn. The software is a means to clean books and calm tax seasons; pick the one that gets you there with the least friction.

What Is the Best Accounting Software for a One-Person Business That Sells Products?

Product sellers need what service freelancers don’t: inventory tracking, cost of goods sold, and sales tax handling. That changes the picks from the main guide. Wave (free) handles basic inventory and COGS adequately for simple product lines — remarkable at $0, though it strains past a few hundred SKUs. QuickBooks Online Simple Start ($30/month) adds proper inventory valuation and sales tax automation; it’s the mainstream choice for product solos.

For e-commerce specifically, consider A2X ($19+/month) alongside your accounting software — it imports Amazon, Shopify, and Etsy settlements accurately, splitting fees, refunds, and sales tax correctly. Doing this manually is where product sellers’ books go wrong; the settlement reports are deliberately confusing. Xero with inventory add-ons suits product businesses planning to scale, but it’s overkill under $100K revenue.

The product-specific disciplines: track inventory from day one (even a spreadsheet beats memory), separate COGS from expenses (your profit margin math depends on it), handle sales tax correctly (economic nexus rules mean you may owe in states you’ve never visited — use TaxJar or Avalara when multi-state), and count physical inventory quarterly. Product accounting has more moving parts than service accounting, but the weekly 15-minute habit from the main guide still applies — it just includes an inventory glance.

Don’t neglect the sales-tax side of product accounting: economic nexus laws mean you may owe sales tax in states where you merely exceed a sales threshold, even with no physical presence. Marketplace facilitator laws mean Amazon and Etsy collect in many states for you — but your own Shopify store doesn’t get that help. Use TaxJar or Avalara once you’re multi-state; before that, register in your home state and any state where you have inventory (including Amazon FBA warehouses). Sales tax errors compound into penalties fast, so handle this before it handles you.

Related reading: how to handle taxes as a self-employed person  ·  what are the best free tools for managing a small business

The Bottom Line

Wave ($0) for free complete accounting; QuickBooks Sole Trader (~$15–$20/mo) for tax-time ease and mileage; FreshBooks ($19+/mo) for invoice-heavy freelancers. You need invoicing, expense tracking, bank import, and Schedule C categories — not enterprise features. Run the 15-minute weekly habit, reconcile monthly, and upgrade only when employees, inventory, or your CPA demand it.

Sources: Wave: free accounting software  ·  QuickBooks for self-employed