taxy
for macOS 13 or newer · Apple Silicon and Intel

taxy is taxes
made by/for people
who hate taxes

Dutch tax,
quietly
handled.

You make things.
Four times a year
the Belastingdienst
wants five numbers about it.
taxy makes the numbers.
You keep making things.

taxy reads your receipts, keeps your books, and turns every quarter into the exact numbers the Belastingdienst asks for. You type them in. Three minutes, four times a year — or longer, if you want.

Who it's for

taxy is an app for the freelancer, the zzp'er, the creative, the independent, the eenmanszaak, the expat, the dj, the writer, the barista, the creative director, the influencer, the vibe coder, the brand owner, the teacher, the photographer, the illustrator, the musician, the tattoo artist, the yoga teacher, the translator, the copywriter, the game developer, the podcaster, the florist, the tutor, the filmmaker, the coach, the designer, the hairdresser, the personal trainer, the consultant, the carpenter, the plumber, the electrician, the painter, the cleaner, the gardener, the driving instructor, the courier, the market vendor, the baker, the bookkeeper.

The ones who are doing their own thing.

Let taxy help you do your own thing.

A receipt becoming the five VAT portal boxes.
Your quarter · as the portal asks
1AOmzet hoog tarief€ 8.420
2AVerlegd naar u€ 610
4BVerwerving uit EU€ 231
5BVoorbelasting€ 402
5CTe betalen€ 1.375
COMPUTED TO THE CENT · YOU TYPE THESE IN

THE WHOLE PRODUCT, IN ONE PICTURE — EXAMPLE FIGURES

01DROP Receipts, invoices, anything with VAT on it — any language, any currency, clean PDF or sloppy thermal scan, one file or 150 at once. Duplicates are caught automatically.
02READ AI extracts amounts, VAT, dates. You approve every line.
03KEEP Every accepted receipt copies into a dated archive on your Mac — by year, quarter, and type, plus a searchable PDF backup. Export as CSV or ZIP for your accountant; nothing is ever auto-deleted, well past the 7-year bewaarplicht.
04FILE Five numbers, portal-ready, calculated by taxy, filed by you — never behind your back.
Four quarter cards, as in the app: Q1 filed, Q2 filed, Q3 next and due 31 October, Q4 not started.
01

Q1

FILED
02

Q2

FILED
03 · NEXT

Q3

DUE 31 OCT
04

Q4

—
Your income tax

Your income tax,
as the portal asks,
with one proper cheatsheet.

taxy does not file your income tax return —
the portal does, and only you can. What it gives you is a damn good cheatsheet with the essential stuff: every number your return needs, already computed, ready for you to file yourself or hand to your accountant.

taxy adds up your year the moment you open it:
revenue, deductible costs, a profit.
That profit is marked provisional, and stays marked, until you've answered thirteen calm questions — did you make the hours, is this your first year, did you buy equipment.
Answer them and the number goes final.

For your accountant: a dossier PDF and an auditfile —
your whole ledger in XAF 4.0,
the standard format accountants already read, plus audit documents that should make your accountant really happy.

Thirteen answered questions becoming the lines of the income tax return.
Your 2025 return · ready to type over
Netto omzet fiscaal€ 41.200COPY
Totaal bedrijfslasten fiscaal€ 9.840COPY
Winst ondernemerschap€ 31.360COPY
Zelfstandigenaftrek€ 2.470COPY
MKB-winstvrijstelling€ 3.669COPY
Belastbare winst€ 25.221COPY
EVERY LINE UNDER THE NAME THE PORTAL USES

YOUR 2025 RETURN, READY TO TYPE OVER — EXAMPLE FIGURES

The books

Chaos in,
Order out.

Dump in the mess — photos, PDFs, exports from Stripe (payments or balance), PayPal, Adyen, SumUp, Zettle, Wise, Revolut or Mollie. Books come out: ordered, in euros, searchable the way you'd ask ("uber >50", ":missing"). A bad import takes one undo. Everything is kept — on your Mac: receipts archived, backups integrity-checked. Back up that Mac the way you'd back up anything you can't replace — taxy keeps no copy anywhere else. A filed quarter locks. Permanently.

The shape of it

An F1 engine,
shipped in a Volvo.

Underneath: arithmetic done in whole cents, every number tied to the article of law it comes from, and the income-tax XBRL checked against the Belastingdienst's own taxonomy by an independent validator — an engine put through a recurring three-vendor cold exam, where every finding is reproduced against the shipped build before it counts. On the surface: one grid, one amber dot, nothing that shouts.

One honest asterisk: reading a receipt sends that image to Anthropic's cloud AI — GPS and device data stripped, PDF metadata stripped, no name and no filename attached. Then everything comes home and stays on your machine.

What taxy can and cannot do — the honest list →
The output

Every filing ships
with its own evidence.

The audit PDF is not a summary — it is the paper trail. Every box traces back to its rubriek, a full reconciliation, cross-checks against your own data, a VIES check on every EU VAT number involved, a statute index citing exactly which law backs each number, and a refusal ledger for anything taxy declined to guess at.

Every PDF regenerates byte-for-byte from the filing snapshot taxy keeps for the 7-year bewaarplicht — the SHA-256 fingerprint on the page lets you verify a copy matches. The methodology behind every number sits on that same page, in plain language.

What it costs
No trial clock,
no locked export,
no surprise.
Always free

Your ledger, the math, exports, backups. taxy never holds your books hostage.

taxy Pro

€ 120 a year. Receipt reading, the law re-pinned every year, the audit pack, the auditfile for your accountant. Founding friends: free until we say otherwise — and you'll hear it from us first.

Verify it yourself · coming

The engine will be published under an open licence. Run the tests yourself.

taxy takes care
of what you hate,
so you can focus
on what you love.

Interested?

Leave your e-mail and I’ll write when taxy is ready for you.

NOT PUBLIC YET
NO LIST · NO TRACKING

Your address goes to Stef’s mailbox and nowhere else. No list, no tracking. Reply “stop” any time.

Nothing is stored.
Your address goes into one message to my mailbox.
That message is the only copy.

Open core · coming

The engine that computes your numbers will be published under an open licence, so anyone can check the math. taxy the app stays taxy.

Trust is easier when you can run the tests yourself.

Built to
  • Wet OB 1968 — Art. 9, 12, 14, 15, 17a
  • SBR NT20 (20251210.a) — VAT-return elements verified live · income-tax XBRL on NT21
  • NT20 BR-BD-03.x — 7/9 OB rules enforced
  • Byte-deterministic 7-year audit reproducibility
  • Integer-cents arithmetic · one round per VAT calc
  • WCAG 2.1 AA — automated scans of the main screens, not a full human audit
  • Locked by 80+ compliance tests
  • 74 golden filing scenarios — zero-variance engine tie-out
  • 15+ capabilities adversarially reviewed by three vendors — archived 2026-08 record

Every line above is enforced by a test that fails the build if it stops being true.

Can & cannot
Zero ambiguity.
Read this
before you trust a number.
taxy CAN
  • Read Dutch and foreign receipts (photo or PDF) with AI and pull out the amount, VAT, and date — you check every result before it counts.
  • Classify 21% / 9% / 0% VAT and compute every BTW box in exact cents.
  • Handle reverse-charge purchases and sales (EU and non-EU services), and validate VAT numbers, including country-code mismatches.
  • Convert foreign currency at the official ECB reference rate for that receipt's own date — never a blended average across the quarter.
  • Hold your VAT filing while the KOR applies to you, and warn you before your turnover nears the KOR ceiling. taxy does not compute the scheme itself.
  • Build your quarterly return as the portal numbers for that quarter, record the filing, and produce an accountant-grade audit PDF.
  • taxy does your business in Box 1 — the profit from your work and the deductions that hang off it. Your home, your partner and boxes 2 and 3 stay with your accountant.
  • Compute your business income (winst uit onderneming) from your bookkeeping, work out the self-employed deduction (zelfstandigenaftrek), small-scale investment deduction (KIA), and SME profit exemption (MKB-winstvrijstelling) — and tell you plainly when something is out of scope instead of guessing.
  • Generate an XBRL file for your income tax profit return (IB aangifte winstgegevens) that follows the Dutch Taxonomy (NT21), with built-in validation checks before export. (This is the income-tax return only — taxy does not yet emit XBRL for the quarterly VAT return; for that it gives you the portal numbers to enter yourself.)
  • Export an auditfile — your whole ledger in XAF 4.0, the standard format Dutch accountants and the Belastingdienst read — so handing your books to an accountant is one file, not a folder of screenshots.
  • Flag duplicate receipts automatically so you never claim the same expense twice, and tell you when a new version is ready to install.
  • Read a transactions CSV you download from Stripe (both the Payments and the Balance export), Mollie, PayPal, Adyen, SumUp, Zettle, Wise or Revolut — it works out which one it is on its own, shows you every row before anything is saved, and skips rows you already imported. (Bank statement CSVs are parked for now — PSP exports only.)
  • Read one screenshot or PDF that lists several invoices at once and make each line its own transaction — you see every row before anything is saved, and the source file is archived once, with every row pointing back to it.
  • Organize every receipt into a clean, dated archive — copied into folders by year and quarter, named by date, vendor, and amount, with nothing orphaned or duplicated. Chaos in, order out.
  • Back up everything — transactions, filings, and every archived receipt file — into one file, with a SHA-256 integrity check per file, so a restore is either complete or refused, never silently partial.
  • Keep every already-processed receipt, your full ledger, and your archive fully readable and exportable with zero internet connection.
  • Keep everything on your Mac — no account, no sync.
taxy CANNOT
  • Give tax advice. taxy computes and informs — it never advises.
  • File for you. There is no direct submission — you type the five numbers into the Belastingdienst portal yourself (about 3 minutes).
  • Do your full income tax return. taxy computes your business profit (box 1 winst) and the three main deductions, but it does not compute heffingskortingen, box 2 (income from substantial interest), box 3 (savings and investments), or the final tax amount — those are for your accountant or the Belastingdienst portal.
  • Decide tricky deduction edge cases (BUA staff benefits, mixed business/private use) — taxy flags these for you or your accountant instead of guessing.
  • Read a NEW receipt without an internet connection — extracting one sends the image over the network, through taxy’s own server, to Anthropic’s AI. (Already-processed receipts need no connection at all — see CAN, above.)
  • Call an upload anonymous. The image or text is what Claude reads — GPS, device and software metadata are stripped from JPEG, PNG, GIF, WEBP, HEIC and PDF receipts before they leave your Mac, and the filename itself is replaced with a content hash before it's sent, so the real one never travels either. No name or account identifies you to Anthropic. Receipt images are not kept by taxy; Anthropic’s own retention applies. taxy's own server does keep a small, pseudonymous record per extraction — cost, latency, confidence, the app version, a short (16-character) fragment of the file's content hash, and a random per-install ID, never a filename and never your name — to watch for outages, not to store your bookkeeping, and it's deleted automatically after 90 days. But a receipt with your name printed on it is still identifiable by its content, no matter what metadata is gone — so we won't call it anonymous.
  • Connect to your bank by itself. taxy reads a CSV you download; it never logs in to your bank and asks for no bank credentials.
  • Claim back VAT on money going out of a payment CSV. A payment-processor line says what left and when, never what it was for, and Dutch rules want an invoice before you deduct — so those rows land at €0,00 VAT and you edit them once the invoice is attached.
  • Book a refund from a payment CSV. taxy will not guess which sale a refund reverses, so it lists refund rows and leaves them for you to enter as a credit note.
  • Book a payout from a sales platform — Bandcamp, Etsy, Spotify, Patreon, YouTube, Apple, Steam and the like. Whether the platform sold in your name or in its own decides the VAT box, taxy cannot read that off the payout, and it will not pick a box on a coin flip — so that quarter is held, with the reason named, until you or your accountant settle it.
  • Put a second-hand margin-scheme sale (margeregeling) or a private-use correction in box 1d into a return. taxy recognizes both and stops the filing rather than write a number into the wrong box — those quarters go to your accountant.
  • Replace an accountant's judgment — a human accountant review is planned after V1, and taxy says so rather than hiding it.