Finance and accounting decision

Wave

A capable developer can build a useful invoicing+bookkeeping replacement (invoicing, ledger, bank import, payments) but replicating Wave’s payroll, advisory services, polished mobile apps, scale, and payment/merchant integrations is costly—keep paying for full parity.

Visit website
You pay

$19/mo

$228/yr

Read off the official pricing page.

You’d pay instead

$100one-off80 h to build

$50/mo10 h/mo upkeep

On cash alone, building overtakes the subscription at 4 seats.

Open-source builds that already do this

Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need - the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship. All Wave alternatives, with the arithmetic →

What a replacement has to do

  • Create and send invoices; record and categorize bookkeeping transactions; import bank transactions; accept online payments; view basic financial reports (P&L, balance sheet).

What it still won’t have

  • Payroll (regulated payroll processing and tax filings)
  • Wave Advisors (in-house bookkeeper / advisory service)
  • Polished mobile app (iOS/Android companion)
  • Built-in receipts OCR add-on as provided by Wave
  • Payment processing discounts / integrated merchant relationships and PCI handling at Wave scale

What remains hard

  • Brand trustOver 350,000 small businesses trust Wave to easily button-up their books
  • Execution qualityWave is rock solid.
Read the build prompt

First-year cost

Keep paying

Paying is—cheaper in year one.

On cash alone, building overtakes the subscription at 4 seats.

Paid seatsseats

Money you would actually spend

Keep paying
—

Subscription price × seats × 12

Build it
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AI build —APIs + hosting —

Time you would spend

—

—

What you would spend

What we assumed

The verdict above measures whether you could build it. This one is only about money.

Runnable build prompt

Not run yet
Build a minimal self-hosted Wave-like service using Node.js (Express), Postgres, React, and Docker. Include: (1) user auth and single-business multi-tenant data model, (2) invoice creation with PDF generation and email sending, (3) transaction CRUD and a simple chart-of-accounts, (4) bank import endpoint supporting Plaid and CSV upload with auto-merge rules, (5) payments integration via Stripe for card/ACH and reconcile into transactions, and (6) dashboard pages for P&L and balance sheet. Out of scope: payroll tax filing, managed bookkeeping services, and native mobile apps. Provide error handling, input validation, unit tests for API endpoints, and deployment scripts (Docker Compose).
How we checked4 sources · 2/3 runs agreed · evidence score 63

How the score was reached

  • Partly verdict base52
  • An open-source build was found+5
  • 4 cited sources+3
  • Price verified on pricing page+3
  • Evidence score63

The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.

How scoring works →

Cited sources · 4

Every page the run actually retrieved.

Integrity checks

What held up, and what did not.

✓ Price read off the page! 2 of 3 runs agreed; the verdict is the majority✓ Citations limited to fetched pages! 2 moats quoted from the page