Cross-border payments & EU VAT consultancy
FiscalGeek runs your payment-gateway setup, EU VAT registration and OSS/IOSS filing with audit-proof reporting — so your finance team enters new markets without standing up an in-house fintech or tax desk.
Built for EU-facing e-commerce, SaaS & marketplace finance teams.
The compliance landscape, mastered
Client outcome
Selling into new EU markets used to mean a fresh payment-gateway project and a different VAT rulebook every time, with nobody in-house who owned either. FiscalGeek took both — they rebuilt our checkout around PSD2 and SCA so more good payments clear, registered us for VAT where it was owed, and now run our OSS and IOSS filings. Opening the next market no longer starts with a scramble over whether we’ll get paid or stay compliant.
FiscalGeek was founded by three people who spent their careers inside payments, fintech and EU tax. The names below configure your gateways, file your OSS/IOSS returns and reply when an auditor calls — you work with them directly.
Co-founder · Payments Lead
Fifteen years integrating PSPs and acquirers across the EU. Builds the gateway routing, PSD2/SCA flows and chargeback controls that keep cross-border checkout converting.
Co-founder · Fintech Lead
A fintech engineer who has reconciled multi-currency ledgers at scale. Ties settlement data back to every VAT number, so payments and tax agree across jurisdictions.
Co-founder · VAT & Compliance Lead
A former indirect-tax advisor specialising in EU VAT. Owns registration, OSS/IOSS filing and audit-proof reporting — so an authority's questions are answered before they are asked.
Every engagement is led end-to-end by a founder — never handed down to a junior desk. See how we work
The operating model
Cross-border revenue leaks in the seam between the gateway and the VAT return. FiscalGeek owns both halves on one team — so authorisation rates, SCA exemptions, OSS/IOSS filings and multi-currency reconciliation reinforce each other instead of pulling apart.
See how we’d set this upPayment infrastructure
Acquirer and gateway selection tuned for EU checkout — the right local methods, smart routing with failover, and PSD2 / SCA configured so genuine buyers clear while your PCI DSS footprint stays deliberately small.
VAT compliance
OSS and IOSS registration, quarterly returns and reconciliation across currencies and jurisdictions — financial operations your auditors can trace line by line as you open each new market.
Objection handling
Payments and cross-border VAT sit in the same ledger — it's where your revenue and your risk meet. Before you bring in outside help, you deserve straight answers on how we work, what we're tied to, and where your obligations actually begin.
Because they're two halves of the same record. Every cross-border sale is both a settlement event and a taxable supply — split them across two vendors and you inherit every gap between them. We own the chain end to end, from gateway authorisation through to your OSS return, so the numbers reconcile by design instead of in a quarter-end scramble.
No — we're deliberately gateway-agnostic. We integrate and tune Stripe, Adyen, Mollie, Checkout.com and regional acquirers alike, and we recommend on your routing costs, approval rates and the markets you actually sell into. No referral kickbacks steer the advice; the right stack is whatever lifts conversion and lowers your cost per transaction.
Never. We work inside your stack — your gateway, your ERP, your tax engine — not a black box we rent back to you. Every configuration, filing calendar and reconciliation rule is documented and handed over. If we ever part ways, nothing switches off and nothing is held hostage.
Four things, mostly: holding stock in a member state, crossing the €10,000 pan-EU distance-selling threshold, using a local fulfilment or marketplace warehouse, or making domestic B2C supplies. We map your real flows against each trigger and tell you plainly where you must register, where OSS or IOSS already covers you, and where you have no obligation at all.
We configure 3-D Secure 2 and SCA exemptions to strip friction without raising fraud or chargebacks, and we keep you on the lightest defensible PCI DSS scope — SAQ A wherever your setup allows. You get the compliance posture of an in-house fintech function without carrying the headcount for one.
Most launches — gateway routing, a VAT registration or OSS extension, and clean reconciliation — go live in four to eight weeks, the variable being registration backlogs in the target country. We sequence the work so you keep selling while filings complete, rather than freezing revenue to wait on paperwork.
Insights desk
Practical analysis for finance teams selling across EU borders — written by the people who set the payment and VAT plumbing up in the first place.
Find the HMRC VAT number, opening hours, call tips, and online help.
Spend 30 minutes with a FiscalGeek consultant. We review your payment-gateway configuration, EU VAT registrations and OSS/IOSS filings, then show you exactly where revenue and compliance risk are hiding — no forms, no pitch, no obligation.