A clearer view of the business.

Keep the books for your Dutch sole-trader business in a local Windows app. Follow work from quote to invoice and payment, review receipts and outstanding tasks, and prepare records for your accountant.

Windows desktop app

Development release 1.1.1 · September 2026

Unsigned Windows development build; testing on a fresh Windows installation is pending.

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INSIDE REKENHAVEN

From client work to a clear invoice.

Archived walkthrough · 9 September 2026 · Sample data. These images illustrate the workflow in an earlier build; see Features for the development release overview.

01

Describe the work

Choose a customer and enter the invoice date, delivery date and line items. Each line has its own quantity, unit price and VAT rate.

Rekenhaven invoice editor with customer, invoice and delivery dates, and VAT line items. — Rekenhaven / Development capture

02

Keep track of issued invoices

See each invoice’s customer, dates, total and status. Open or download an invoice, or record a payment from the list.

Rekenhaven invoice list with customer, dates, totals, status and payment actions. — Rekenhaven / Development capture

03

Generate an invoice PDF

The app generated this invoice PDF from the sample record: twelve design hours and one delivery package.

Sample invoice PDF generated by Rekenhaven with design hours and a delivery package. — Rekenhaven / Development capture

Follow the money, including the exceptions

Keep invoice balances connected to the payments and adjustments behind them.

Record partial and split payments, advances, credits and refunds.
Retain original PDFs for issued invoices and credit notes.
Follow outstanding amounts through reminders and reports.

See what needs attention

Use a work queue to find outstanding administration.

Review receipts before recording expenses.
Import supported bank statements.
Turn accepted quotes into draft invoices and generate recurring drafts when due.

Prepare a clear accountant handover

Make records easier for you and your accountant to review.

Review financial and VAT summaries and the activity history.
Export records and documents; complete local backups include attachments.
Review documents in the optional email outbox before sending.

THE IDEA BEHIND THE PROJECT

Made for independent work.

Rekenhaven follows the day-to-day work of a Dutch sole trader: serving clients, managing invoices and keeping clear records. The aim is to make administration easier to follow, including when someone else reviews it.

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