Startups need two things from accounting software that most small businesses don't: numbers that update fast enough to manage runway, and books clean enough to hand an investor. I'm a Certified Puzzle Advisor and work in QuickBooks Online, so here's how the main options stack up for founders.
Quick picks: VC-backed or SaaS on Stripe → Puzzle. Want the software every CPA and lender knows → QuickBooks Online. International team or unlimited users → Xero. Pre-revenue side project → Wave. Multiple entities with a finance team → you're heading toward NetSuite.
The comparison at a glance
| Software | Best for | Standout | Watch out for |
|---|---|---|---|
| Puzzle | Startups on Stripe, Mercury, Brex, Ramp | Cash and accrual books from one ledger; Stripe revenue recognition; live burn and runway | Less depth for inventory or job costing |
| QuickBooks Online | Most US startups | Every CPA knows it; deepest integration ecosystem; payroll built in | Revenue recognition and startup metrics need add-ons or spreadsheets |
| Xero | Global teams | Unlimited users; strong multi-currency | Fewer US CPAs use it; US payroll through a partner |
| Wave | Pre-revenue and side projects | Free starting tier | You'll outgrow it once you hire or raise |
| NetSuite | Later-stage, multi-entity | Consolidations and controls at scale | Expensive and heavy for an early startup |
1. Puzzle: best for VC-backed and SaaS startups
Puzzle is built for startups. It keeps cash-basis and accrual-basis books from the same ledger at the same time, so you can manage runway in cash while investors get accrual financials. It automates revenue recognition and deferred revenue for Stripe subscriptions, and it shows burn, runway, MRR and ARR without a spreadsheet. It connects natively to Stripe, Mercury, Brex and Ramp. I run my own company's books in it. My full Puzzle accounting review covers where it fits and where it doesn't. Puzzle
2. QuickBooks Online: the safe default
If you want the software every accountant, lender and future hire already knows, it's QuickBooks Online. It has the deepest integration ecosystem and payroll built in. The gaps for a startup are SaaS revenue recognition and startup metrics, which usually mean an add-on or a spreadsheet on the side. QuickBooks
3. Xero: for global teams
Xero includes unlimited users and handles multiple currencies well, which helps a startup with contractors or customers abroad. In the US, payroll runs through a partner such as Gusto, and fewer CPAs work in it day to day. See QuickBooks Online vs Xero. Xero
4. Wave and 5. NetSuite: the two ends
Wave has a free starting tier that's fine while you're pre-revenue. Move off it before you hire or raise. NetSuite is where companies go when they have multiple entities, a controller and audit requirements. It's rarely the right first system. Wave
What investors and your future self will want
- Accrual-basis financials. Investors expect them, even if you manage cash day to day.
- Revenue recognized correctly. An annual plan paid up front is earned month by month, not all at once.
- Clean separation. Business accounts only, founder expenses reimbursed properly, and equity recorded right.
- A monthly close. Every account reconciled to the bank statement, every month. Real-time dashboards don't replace that.
More on the setup in bookkeeping for tech startups.
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