Four services, each built for a different situation. Here's exactly which one fits you, what's included, and what it costs.
My role is to be your independent check — vetting, verifying, and correcting your cross-border VAT, kept separate from whoever registers you. Keeping those two roles apart is what lets me tell you the truth about a filing or an intermediary without any conflict of interest. In practice: I'm not a registered IOSS intermediary myself, so if you need one, I help you choose and monitor a reliable one rather than register you and mark my own homework. Here's exactly how that plays out, depending on your situation.
Most of my clients aren't operating in just one jurisdiction. A US-incorporated startup selling into the EU. A Dutch BV with contractors in Latin America. A founder who needs their European VAT to make sense to a US-based accountant they already trust. I handle your EU VAT and Dutch compliance directly — calculation, filing prep, reconciliation. For US tax filing specifically, that stays outside what I do: not because of the technical complexity, but because my professional liability coverage doesn't extend to US jurisdiction, and I won't advise on something without that protection in place. What I do instead is make sure your European numbers are clean and consistent with whatever your US accountant needs to see — so nothing falls through the cracks between the two sides.
Not sure? Run the free 60-second diagnostic first — it'll point you to the right one.
Selling cross-border within the EU? I calculate your OSS/IOSS VAT and prepare the return. You review, approve, and file — or authorize me to file it on your behalf, the same way I handle your regular VAT.
Being registered doesn't guarantee every filing is accurate. I reconcile your actual sales against your declared filings every month — not just once a quarter — so a mismatch gets caught while it's a five-minute fix, not a corrected return.
IOSS legally requires you to appoint your own EU-based intermediary — I'm not one, and I won't pretend to be. What I do instead: vet the intermediary you choose (or help you pick one), manage the transition if you're switching, and reconcile your actual sales against what they declare every month.
A scheme mismatch — like being registered for IOSS while only selling digital products — usually means whoever set it up didn't check what you actually sell. I help you get registered correctly, then verify your filings every month afterward.
E-commerce sellers making B2C sales across EU countries generally have to charge VAT at the rate of the customer's country once they pass a €10,000/year cross-border threshold. Instead of registering for VAT separately in every country customers are in, the OSS scheme lets an EU-established business report and pay all of that VAT through a single quarterly return in its home country. Imported physical goods under €150 sold to EU consumers from outside the EU fall under the related IOSS scheme instead.
IOSS intermediaries carry joint and several liability for their clients' VAT — legally, the intermediary can be held responsible if a client underreports or misfiles. I decided early on not to take on that liability, because the same party registering you and checking the work has an incentive to look the other way. Instead, I focus on being the independent check.
OSS (One Stop Shop) covers intra-EU B2C sales — goods already in the EU, or digital services — for EU-established businesses (or non-EU businesses via the separate Non-Union scheme). IOSS (Import One Stop Shop) covers imported physical goods under €150 sold to EU consumers from outside the EU. They're not interchangeable, and using the wrong one is a common — and costly — mistake.
No. Non-Union OSS, which applies to your situation, doesn't require an intermediary — you can register directly. If you've been told otherwise, or if you're currently registered for IOSS instead (which only covers physical goods), that's worth a closer look.
I can help you evaluate and choose one as part of the Intermediary Verification & Reconciliation service. I don't operate as one myself, but I'll help you pick a reliable one and keep checking their work afterward.
It depends on who you're selling to. For B2B sales to a VAT-registered business in another EU country, you generally issue an invoice without VAT and apply the reverse-charge mechanism, listing both parties' VAT numbers and stating "VAT reverse-charged" on the invoice. For B2C sales, you typically charge VAT at the rate of the customer's country once registered under the OSS scheme, or your own country's rate if you're below the €10,000/year cross-border threshold. Getting this distinction wrong is one of the most common cross-border invoicing mistakes.
No. My professional liability coverage explicitly excludes US jurisdiction, so I don't prepare or file US tax returns — advising on that without proper coverage isn't something I'll do. What I do handle is your EU VAT and Dutch (NL/BV) compliance, structured to be consistent with what your US accountant needs. If you're looking for one provider to handle everything — EU and US — you'll likely need a larger firm. If you want your European side to be airtight while keeping your US accountant separate, that's exactly where I fit.
For the EU side — OSS/IOSS registration, filing, and reconciliation — that's core to what I do, with a Dutch/EU base and direct experience across SaaS, marketplaces, and digital products. For Latin America, VAT and indirect tax rules vary significantly by country and aren't something I file directly, but I coordinate with local accountants so your EU compliance and your LatAm operations tell the same consistent story to investors or auditors. If your business sells in both regions, the practical split is usually: EU VAT handled directly by me, LatAm compliance handled locally, with both kept in sync.
Not as a single filer — US sales tax stays outside my coverage for the reason above. What I can do is make sure your EU VAT/OSS-IOSS side is fully handled and reconciled, while staying in direct contact with whoever manages your US sales tax so registrations, thresholds, and reporting periods don't quietly drift out of sync between the two systems. For most cross-border e-commerce sellers, that coordination — not a single all-in-one filer — is what actually prevents costly mismatches.
Tell me a bit about your situation — I'll point you to the right service, or tell you honestly if you don't need one yet.