Cross-Border Tax Intelligence
Your bank sees "Mercadona, €50". Forensix reads the receipt line by line, so it knows €30 was food and €12 was deductible printer ink. Ask it anything about your spending, catch every deduction under both HMRC and Hacienda, and hand your gestor a clean pack instead of a shoebox of tickets.
If you live in Spain and work for yourself, both countries have an interest in your income. Put your figures in below and see where you stand in each one. Nothing is hidden and you do not need an account.
Your profit after business costs, not your turnover.
This matters more than people expect. Each region sets its own half of the income tax.
Spain gives you a real allowance per child. Leaving them out overstates your tax.
These are estimates for a self-employed autónomo, using 2026 rates, converted at £1 = €1.1736 (reference rate). They assume you have no other income, that you file individually rather than jointly with a spouse, and that you claim no regional deductions. We are software, not your accountant, and we are not registered tax advisers. Always confirm the final figures with a gestor before you file.
If you operate as a UK Sole Trader or Ltd Company while living in Spain (Autónomo), your tax liability spans two jurisdictions. Traditional apps only catalog expenses in a single currency and code under a single country. Forensix implements the dual-ledger bridge.
UK allows deduction of business expenses incurred "wholly and exclusively" for trade. Pre-commencement expenses are deductible up to 7 years. Capital allowances (AIA) let you write off 100% of tech assets in year one.
Spain (Agencia Tributaria) requires formal invoices (Factura Completa) with your NIF/NIE. Travel must be strictly documented. Groceries are disallowed. Representación (client food) is capped at 1% of turnover.
We handle the reconciliation dynamically. We track if an invoice meets Spanish NIF requirements and flag potential liabilities, while keeping standard HMRC deductions separate. Your accountant gets clean, compliant ledger sheets.
Upload up to 15 receipts at once. No waiting in line for individual scans to complete. Our parallel processing engine performs OCR text recognition, parses vendors, currencies (GBP, EUR, USD), dates, total values, and extracts tax IDs (NIF) instantly.
We don't just dump a flat 50€ expense for a supermarket run. Our AI parses receipts item-by-item. It segregates personal groceries from client representation meals and flags single-item deductibility parameters. Perfect for proving expenses to Spanish tax inspectors.
Query your overall business finances in plain English or Spanish. Learn if buying a new camera is deductible, calculate your effective Spanish Autónomo social contributions, or project your UK corporate tax. Toggle between a standard clean interface and a hard-boiled "Detective Noir Theme".
"The rain is pounding Madrid tonight. I looked at your numbers. Mercadona files look clean, but you're drowning in Starbucks vice spend. Let's dig in."
Export a clear Gestor Pack when it is time to file: your transactions grouped by category, NIF-matched where possible, with GBP and EUR conversions and the figures your accountant actually needs. Less back-and-forth, faster filing.
Fair question. You could paste a receipt into a chatbot right now. Here is the honest difference, and why the paid version pays for itself.
A general AI is a clever friend with no memory. Forensix is a system that holds your money.
We are software, not your accountant, and we say so. Forensix shows its workings, flags anything that needs a human, and never invents a number to look clever. Confirm the final figures with your accountant before you file.
A gestor charges €50 to €160 a month, largely to type up your receipts. Do that part yourself in seconds and pay them for the filing, not the data entry. The subscription is itself a deductible business expense.
See where you stand, for nothing. No card, no catch.
The always-on AI that knows every line you've spent, plus everything you need to file for less.
14 days free, cancel anytime. No charge until the trial ends.
Under the UK-Spain Double Taxation Treaty, if you are a Spanish tax resident (present 183+ days in a calendar year), you are liable to pay tax in Spain on your worldwide income. If you invoice via a UK Ltd company, you pay UK Corporation Tax, but may owe personal tax and Autónomo social contributions in Spain. Forensix segregates expenses in both ledgers so your accountants in both countries can coordinate correctly.
Spanish accountants (Gestores) require very strict reporting. If you upload plain receipts, they will refuse to deduct them unless they display the vendor NIF (tax identification) and your personal NIF/NIE. The Gestor Pack exports a clean PDF statement grouped by category with NIF codes matched and validated, saving hours of review.
You drag and drop up to 15 PDFs or image files. They are processed in parallel using the Gemini multimodal JSON extraction API, which maps out vendor, NIF, date, total amount, taxes, currency, and parses itemized receipt lines.
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