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Protect your international scaling. We handle remote-seller tax registration, data sorting, and monthly filing across the US, EU, UK, Japan, Singapore and more. You sell globally — we keep you compliant without spending your engineering team's time on it.
Most founders don't set out to build a multi-country tax problem. It happens gradually — a few customers sign up from the UK, then a startup in Berlin starts paying you in euros, then a distributor in Tokyo asks why your invoices don't show consumption tax. None of that was a deliberate "let's expand into these markets" decision. It was just growth, and growth in a SaaS or AI business almost always outruns the tax registrations that are quietly supposed to come with it.
We built this service because the two options founders usually reach for don't actually solve the problem. Automated tax software tells you what you owe but still expects your team to sort the data, build the integration, and often still handle the actual filing. Doing nothing and hoping it doesn't come up in due diligence eventually stops being a strategy. What's missing is someone who treats this the way your accountant treats payroll — as a recurring operational job that gets done every month, not a project you have to keep relaunching.
If you're an AI or SaaS platform selling globally through subscriptions or API access, you're triggering remote-seller tax obligations automatically — often without realizing it. Whether it's B2C sales into the EU, the UK, Japan, or US state-level economic-nexus rules, tax authorities expect compliance even when you have no local office.
Unresolved global tax liabilities are one of the most common red flags that stall Series A/B funding rounds or acquisition due diligence — investors and acquirers expect a clean cross-border compliance record before they'll close.
Automated tax tools force your engineering team to build and maintain API integrations that break the moment you change your billing logic, add a plan, or switch processors — a maintenance burden most SaaS teams didn't sign up for.
Sorting raw billing logs to validate business tax IDs versus individual consumer transactions — and applying the right treatment to each — is an operational task most finance teams aren't set up to run every month.
Unlike rigid automated tax software that dumps sorting and filing work back on your team, AU Corporate runs this as an end-to-end managed service.
That distinction matters more than it sounds. A tax-calculation API can tell you what rate applies to a given transaction, but someone still has to reconcile that against your actual billing data, catch the edge cases (a refund, a proration, a customer who upgraded mid-cycle), and physically submit the return before the deadline. We do that part — the part software vendors usually leave as "coming soon" or bundle in as a separate, pricier add-on.
| Factor | Rigid Automated Software | RecommendedAU Corporate Managed Service |
|---|---|---|
| Integration effort | Forces your engineers to build and maintain complex API code against your billing stack. | Zero dev-team effort — just send us your raw billing CSV exports. |
| Data handling | Flags errors but leaves your finance team to manually fix transaction-level details. | Human data scrubbing — we clean, sort, and process your logs, separating B2B from B2C correctly. |
| Jurisdiction coverage | Often upsells you heavily to cover non-Western or less common digital-services markets. | One partner across the US, UK, EU, Japan, Korea, Singapore, China, Turkey and beyond. |
| Filing | Prepares returns; you (or your team) still file, or pay extra for a filing add-on. | We file directly with the relevant tax authority in each active jurisdiction. |
Most VAT tooling was designed around a simpler model than the one your business probably runs on — a fixed price, a single currency, a transaction that happens once. Subscription and usage-based billing doesn't work that way. A customer upgrades mid-cycle, a proration hits the invoice, a free trial converts three weeks after the signup date that technically started the tax clock, and a single account might be billed in three different currencies depending on which entity of theirs is paying. Generic tax software tends to choke on exactly this kind of billing complexity, or quietly gets it wrong in ways nobody notices until a filing doesn't reconcile.
Because we're working from your actual billing export rather than a live API feed, we see the full transaction history the way it really happened — upgrades, downgrades, credits, and all — and can apply the right tax treatment to each line rather than an approximation. It's slower than a real-time API call, but it's also the reason the numbers hold up when someone actually checks them.
At the end of your billing cycle, download and send us your transactional data — Stripe, PayPal, Chargebee, or your native billing platform's export. No API integration required.
Our cross-border tax team cleans the data, separates B2B (reverse-charge/exempt) from B2C transactions, calculates local-currency values, and prepares the returns for each jurisdiction you're active in.
We file directly with the relevant tax authority in each active jurisdiction and send you clear, consolidated reports — so you know exactly what was filed, where, and when.
"We'll handle it" isn't very reassuring on its own, so here's what actually lands in your inbox once you're onboarded.
A copy of every return we file on your behalf, with the confirmation or receipt from the relevant tax authority attached — not just a summary spreadsheet you have to take on faith.
We track each jurisdiction's filing deadline and nil-return obligations ourselves. You're not the one remembering that a country you registered in eighteen months ago still needs a return this month.
As your customer base shifts — a new market picks up, another quiets down — we flag it before it becomes a registration you should have made three months ago instead of one you're making now.
We monitor changing digital-services tax laws across markets so you don't have to. Jurisdictions we cover:
The US doesn't have a single federal sales tax — it's a patchwork of state-level economic-nexus rules, each with its own revenue or transaction-count trigger, so a company can be liable in a handful of states long before it's liable in all fifty. Canada layers its federal GST on top of provincial rules that vary by where the customer sits.
The EU's One Stop Shop lets a non-EU digital-services seller register once and file a single return covering every member state, which sounds simple until you're the one reconciling twenty-seven different VAT rates against a single Stripe export. The UK sits outside OSS post-Brexit and runs its own HMRC registration; Switzerland, Liechtenstein and Serbia each have their own separate regimes again.
Japan's consumption tax on digital services has its own registered-supplier mechanics that read nothing like a European VAT return. Singapore and South Korea both tax digital services at the point of consumption but calculate and file differently from each other, and India runs an entirely separate no-threshold rule for foreign OIDAR suppliers — covered in full on our dedicated India guide rather than repeated here.
Turkey taxes digital services supplied to Turkish consumers regardless of where the supplier is based — one of a growing list of markets outside the traditional EU/UK/US set that founders often don't think to check until a customer or an auditor raises it.
Speak to an expert who understands SaaS, APIs, and the digital economy. Tell us which billing platform you use (Stripe, PayPal, Chargebee, or other) and which markets you're active in — we'll get back to you within 24 hours.
In most jurisdictions that tax digital services, yes — the obligation is triggered by where your customer is, not where you're incorporated or whether you have a local office. The EU's OSS regime, the UK's VAT rules for digital services, and most US state economic-nexus rules all work this way for a foreign SaaS or AI company selling directly to customers there.
It varies by jurisdiction, and this is exactly the kind of detail that's easy to get wrong by assuming one country's rule applies everywhere. Some markets (like the EU's OSS for non-EU digital-services suppliers) have no minimum threshold at all; others, including many US states, apply an economic-nexus threshold. We map this against your actual customer base rather than assuming a single global rule.
Most VAT/GST regimes shift the tax obligation to the business customer under a reverse-charge mechanism when the buyer is itself tax-registered, while a B2C sale to an individual or unregistered business generally leaves the obligation with you as the seller. Getting this classification right for every transaction is the core of what our data-sorting step handles.
We work from standard transaction exports out of Stripe, PayPal, Chargebee, and most other billing or subscription-management platforms. If you're on something less common, let us know in your message and we'll confirm we can work with the export format.
Automated tax software still requires your engineering team to integrate and maintain an API connection, and typically stops at calculating and flagging tax — it doesn't file on your behalf in every market without an added filing product. Our model is a managed service: you send us data, we handle sorting, preparation, and the actual filing with each tax authority.
Yes — India is one of the jurisdictions we cover, and it has its own distinct no-threshold registration rule for foreign digital-services suppliers. See our dedicated guide on OIDAR & GST registration in India for the India-specific mechanics; this page covers the broader global picture.
That's usually the actual starting point, not a prerequisite you need to sort out before talking to us. We map your existing billing data against each market's rules to find out where you already have an obligation before registering or filing anything — it's often a shorter list than founders expect, and occasionally a longer one.
It happens more often than you'd think, and it's better addressed directly than left alone. Depending on the jurisdiction, there may be a voluntary disclosure or catch-up filing route that limits exposure compared to waiting for a tax authority to find it themselves. We'll walk through what that looks like for your specific markets rather than assume one approach fits every country.
It depends on how many jurisdictions you're already active in and whether any of them need a fresh registration before a return can even be filed — a new registration typically takes longer than an ongoing filing cycle once you're set up. We'll give you a specific timeline once we've seen your billing footprint, rather than a generic estimate that doesn't reflect your actual markets.
Whether you're just starting to see international revenue or already juggling registrations across several markets, our team can map your current exposure and take the ongoing filing off your plate.
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