booxx - 2026 Pricing, Features, Reviews & Alternatives

This is online accounting software for the Dutch tax system, built for freelancers and small limited companies in the Netherlands who keep their own books, and for the accounting firms that serve them. It runs completely in the browser, on desktop and on mobile as an installable web app, and works fully in Dutch, English, Polish, Hungarian and Romanian. Each user picks their own language, and the translation goes down to the ledger account names, the outgoing invoices, the app emails and the built-in help.

Sales: invoices with your own logo and numbering, written in your customer's language. Every invoice email carries a PDF with an EPC payment QR code and the UBL e-invoice (Peppol BIS 3.0 format). Credit notes, recurring invoices, partial payments and automatic payment reminders are included.

Purchases: every set of books gets its own inbox email address. Forward a receipt or purchase invoice, or upload a photo or PDF, and the supplier, amount, VAT and date are read out automatically. A supplier you correct once is remembered. Foreign-currency purchases are supported.

Bank: import MT940 or CAMT.053 statements from any Dutch bank. Payments match themselves to open invoices, and bank rules handle recurring transactions. Outgoing payments can be exported as a SEPA payment batch.

VAT: each quarter the return is ready with boxes 1a to 5b exactly as the Dutch tax office (Belastingdienst) asks for them. Every amount clicks through to its entries. You file the VAT return, the EC Sales List and supplementary returns straight from the software through Digipoort, and the small businesses scheme (KOR) is supported.

Accounting: real double-entry bookkeeping on the Dutch RGS chart of accounts, with journals, periods, opening balances, fixed assets with depreciation, projects on document lines and bank transactions, payroll journal import from CSV or Excel, year-end close, annual accounts for micro and small entities and the KvK iXBRL filing file. Reports include balance sheet, profit and loss, trial balance, ledger cards, aged debtors and creditors and cash flow, with export to Excel or CSV.

Data and integrations: import your previous books from an XAF audit file and export everything as XAF at any time. Reports and the payroll journal work with Microsoft Excel files.

Accounting firms: a firm portal with a worklist across clients, a deadlines calendar, access per client and per staff member, firm defaults, filing on behalf of clients and insight into the work done.

Security: data on servers inside the EU, two-factor authentication and passkeys, tenant isolation at database level (row-level security), an immutable ledger with reversals and an audit log, and GDPR export and erasure.

Pricing: one price per set of books, with unlimited invoices, entries and users, including your accountant. Free for 90 days without a payment method.