Know what you owe.
Before anyone asks.

Your accountant is great at filing. They aren't always great at debugging a 10,000-row CSV from Stripe for country-code mismatches. VATHack gives them clean data so they can do their job without surprises.

Most founders have. VATHack is designed to surface those errors now, so you can voluntarily disclose them before an auditor finds them. It's the difference between a correction and a penalty.

VATHack applies the correct 2026 VAT rate for each EU member state to the net sales in your uploaded CSV. Standard rates are fully accurate across all 27 EU markets. Reduced and super-reduced rate detection is indicative — based on product category keywords — and should be reviewed for any line items where non-standard rates may apply.

We accept CSV files from any platform — Shopify, WooCommerce, Stripe, Amazon, or custom exports. Your file needs at minimum a country column and a sales amount. Our parser handles missing headers, blank rows, and common formatting quirks automatically.

No. Your CSV is processed server-side and discarded immediately after the analysis completes. We never store your transaction data beyond the current session. Only your account details and aggregated results are retained.

The EU One-Stop Shop (OSS) lets you declare and pay VAT on all EU cross-border B2C sales in a single return filed in your home country — no separate registrations needed in each destination state. Once your cross-border B2C sales exceed €10,000 in a calendar year, destination-country VAT rates apply. OSS is how most businesses handle that obligation without registering locally in each member state. VATHack tells you exactly where you stand.

Our rates are updated for 2026 and cover all 27 EU member states. We monitor EU Council directives and member-state announcements to keep rates accurate throughout the year.

The OSS report gives you a country-by-country filing summary for the quarter: net sales, applicable VAT rate, and VAT due per EU member state — formatted as a table you can hand directly to your accountant or tax agent. It exports as both CSV and PDF. It is not a submission file (OSS returns are filed through your national tax portal), but it contains exactly the numbers your accountant needs to complete that filing.

Yes. The Scale plan processes unlimited rows per run and has been tested to 100,000+ transactions in a single upload. A typical 50,000-row quarterly file completes in under 90 seconds. If you have specific volume requirements or need to process multiple entity CSVs in one run, contact us before subscribing and we will confirm your use case is covered.

Yes — and it's completely separate from the EU VAT tool. The trades section applies Irish VAT rates (23% and 13.5%), checks the two-thirds rule on supply-and-fit jobs, validates RCT figures for subcontractors, and flags purchase VAT you can reclaim. Built for Irish Revenue rules, not EU cross-border ones.

If materials are less than two-thirds of the job total, you charge 13.5% — it's a labour-dominant supply. If materials hit two-thirds or more, the whole job goes to 23%. VATHack reads your labour and materials columns and flags every job where the rate you charged doesn't match the rate due.

RCT is a withholding tax — your principal contractor holds back 0%, 20%, or 35% of your net invoice before paying you. That withheld amount becomes a tax credit against your Revenue liability, so it isn't lost. VATHack shows gross invoiced, minus RCT, minus VAT due per period — so you know your actual take-home before the money arrives.

Upload a purchases CSV alongside your sales and VATHack breaks down eligibility by category. Materials used in your work are typically fully reclaimable; entertainment and personal items are not. Each category gets a verdict and a reclaimable amount — your accountant gets exact figures without estimating.

A CSV from your accounting software — QuickBooks, Xero, or your job-management system. For two-thirds rule checks, include labour_amount, materials_amount, and the VAT rate you charged. For purchase reclaim, upload a separate purchases CSV with descriptions or categories. The parser handles most common formats automatically.

Yes — cancel with one click from your profile page. Your access continues until the end of the current billing period with no cancellation fees. Annual plans follow the same rule.

We offer a 7-day refund on Growth and Scale plans. Contact us within 7 days of your first charge and we'll issue a full refund, no questions asked.