Getting paid is the part of running a solo business that nobody warns you about until you've chased your third overdue invoice. I've run a one-person operation for four years, and the right invoicing tool has saved me hours per month and, more importantly, shortened my average payment cycle by about eight days. If you're still sending PDF invoices from Word or dragging cells in a spreadsheet, here's what the current tools actually look like.
Quick Picks (TL;DR)
- Wave — best completely free invoicing for solo founders who don't need advanced reporting
- FreshBooks — best for solo founders who bill by the hour and want time tracking baked in
- Bonsai — best for service-based solo founders who want proposals and contracts in the same place as invoicing
- Zoho Invoice — best for solo founders who want feature depth without paying a monthly fee
- QuickBooks Simple Start — best if accounting and tax prep matter as much as invoicing
Comparison Table
| Tool | Best For | Free Plan | Starting Price | Standout |
|---|---|---|---|---|
| Wave | Budget-conscious solo founders | Yes (free forever) | Free (verify) | Truly free invoicing + accounting |
| FreshBooks | Hourly billing + time tracking | No (trial) | ~$17/mo (verify) | Time-to-invoice workflow |
| Bonsai | Service-based freelancers | No (trial) | ~$17/mo (verify) | Proposal-to-invoice in one flow |
| Zoho Invoice | Feature-rich free option | Yes (free forever) | Free (verify) | Deep customization at no cost |
| QuickBooks Simple Start | Accounting-first solo founders | No (trial) | ~$30/mo (verify) | Best tax-ready reporting |
Wave
Best for: Solo founders who need professional invoices, basic accounting, and payment collection without paying a monthly subscription.
Wave is the tool I recommend first to anyone launching a solo business. The core invoicing and accounting features are genuinely free — not a trial, not a stripped-down tier. You create an invoice, add your branding, set payment terms, and send it. Clients can pay by card or bank transfer directly from the invoice (Wave charges transaction fees for those, but the software itself is free).
What surprised me when I first switched to Wave was how complete the accounting side is. Income and expense tracking, basic reports, and receipt scanning are all included. For a solo founder whose accountant just needs a P&L at tax time, this is often enough.
Pros:
- Completely free invoicing and accounting software
- Clean invoice templates with logo and color customization
- Recurring invoices and automatic payment reminders
- Bank connection for automatic expense categorization
Cons:
- Customer support is limited on the free plan — mostly self-service
- No project management or time tracking built in
- Payroll features cost extra and are US/Canada only
Who should skip it: Solo founders who bill hourly and want time tracking integrated into invoices, or anyone who needs detailed project profitability reports.
FreshBooks
Best for: Solo founders whose billing is primarily time-based — consultants, designers, coaches, and developers who track hours and need them to flow directly into invoices.
FreshBooks was the first "real" invoicing tool I ever paid for, and the time tracking integration is still the reason I'd recommend it. You log hours in the timer, tag them to a project and client, and with two clicks they're a line item on an invoice. The interface has always been the most polished in its price range — it looks like a product designed for people who care about their brand.
Pros:
- Best time tracking to invoice workflow in this category
- Clean, professional invoice design
- Expense tracking with photo receipt capture
- Solid mobile app for logging time on the go
Cons:
- Pricing per client on lower tiers is restrictive — you hit the cap quickly
- No free plan; only trials
- Reporting is good but not as deep as QuickBooks for tax-ready financials
Who should skip it: Solo founders who bill flat project rates rather than hourly. The time tracking premium doesn't pay off if you're not using it.
Bonsai
Best for: Solo founders who want the entire client lifecycle — proposal, contract, invoice, and payment — handled in one tool with consistent branding throughout.
I've covered Bonsai in other contexts, but its invoicing specifically stands out for service businesses. When a client approves a proposal and signs a contract in Bonsai, turning that into an invoice takes about 30 seconds. The tool remembers your service catalog, your standard rates, and your payment terms. For solo operators who want to look professional without building a stack of five different tools, it's hard to beat.
Pros:
- Seamless flow from proposal to contract to invoice
- Time tracking and expense logging included
- Retainer and installment billing supported
- Client portal for a clean payment experience
Cons:
- Design customization is limited compared to FreshBooks
- Accounting features are basic — not a QuickBooks replacement
- Not suitable for product-based businesses
Who should skip it: Founders who sell products rather than services, or anyone who needs robust accounting and tax reporting built in.
Zoho Invoice
Best for: Solo founders who want feature depth — recurring billing, multi-currency, time tracking, client portals — without paying monthly.
Zoho Invoice surprised me when I tested it recently. It's free, but it doesn't feel free. You get multi-currency invoicing, project time tracking, a client portal, recurring invoices, late fee automation, and a decent mobile app. The catch is that it integrates most naturally with other Zoho products — if you're already in Zoho CRM or Zoho Books, it's an obvious choice.
Pros:
- Free forever with a genuinely complete feature set
- Multi-currency and multi-language invoicing
- Client portal where clients can view and pay invoices
- Time tracking and project billing included
Cons:
- Interface is dense and less polished than FreshBooks or Wave
- Best value when paired with other Zoho tools
- Some advanced features require connecting to Zoho Books (paid)
Who should skip it: Founders who prioritize design simplicity. Zoho Invoice packs a lot in, and the interface reflects that density.
QuickBooks Simple Start
Best for: Solo founders who want invoicing but also need their books to be genuinely tax-ready — with proper income and expense categorization, mileage tracking, and accountant-friendly reports.
QuickBooks is overkill for pure invoicing, but if you're running a one-person business and tax season is painful, it's the right kind of overkill. Simple Start gives you all the invoicing features you'd expect, plus accounting that your bookkeeper or accountant won't have to clean up. In my experience, the automated bank categorization is far more accurate than Wave's.
Pros:
- Best accounting depth for tax preparation
- Strong mobile app with mileage tracking
- Accountant access feature for tax time
- Large ecosystem of accountants familiar with the software
Cons:
- Most expensive option in this list for a solo founder
- Invoicing UI is less elegant than FreshBooks
- More complexity than most solo founders actually need
Who should skip it: Anyone who doesn't need full accounting. If you're only invoicing a few clients and tracking basic expenses, Wave or Zoho Invoice gives you 80% of the value for free.
How to Choose
The fastest decision framework:
- Budget is zero? Wave or Zoho Invoice — both genuinely free.
- You bill by the hour? FreshBooks makes time-to-invoice seamless.
- You want one tool for your whole client lifecycle? Bonsai.
- Tax season is a disaster every year? QuickBooks Simple Start.
Don't get caught choosing a tool based on what you might need in two years. Start with what solves today's problem, and switching costs in this category are lower than you think — most tools can export invoices and client data.
FAQ
Q: Is Wave really free? What's the catch? Wave's invoicing and accounting are free. They make money on payment processing fees (when clients pay by card or bank transfer through Wave) and on payroll (a paid add-on). If you collect payments outside Wave, you'll never pay them a cent.
Q: Can I accept credit card payments with all these tools? Yes — all five support credit card payment collection, though each charges a transaction fee. Compare those rates based on your average invoice value and payment volume before choosing.
Q: Do I need separate accounting software as a solo founder? It depends on your revenue. Under roughly $100K/year with simple expenses, Wave or Zoho Invoice covers enough. Above that, or if you have a mix of income types, QuickBooks or a standalone accounting tool is worth it.
Q: How do I get clients to pay faster? Shorter payment terms (Net 7 or Net 14 instead of Net 30), automatic reminder emails, and built-in card payment options are the three levers that move the needle most. All of the tools here support at least two of those three.