Tax Advisory
Corporate and international tax, transfer pricing, and multi-jurisdiction compliance — handled by a team that already works inside your country's rules, instead of learning them on your engagement.
One Missed Jurisdiction Is All It Takes.
Most accounting relationships work fine until a business crosses a border. A generalist accountant who files one country's taxes well is often guessing at the second one, and tax authorities do not forgive guessing. A late VAT registration. A missed economic nexus threshold. A corporate tax return filed under the wrong regime. The penalty lands on the business, not the accountant who missed it. The businesses that get burned by this are rarely careless. They are usually just growing faster than their tax setup can keep up with.
The full scope of tax work, handled end to end.
Here's exactly what that looks like handled properly:
Built for cross-border complexity, not every situation.
Accounting & CPA firms
White-label tax support for your international clients, delivered under your own brand.
Businesses outside India
Direct tax support for companies operating in the US, UK, Australia, or UAE.
If you need same-day emergency filing with no lead time, or you're a single-entity, single-country business with genuinely simple tax needs, a local generalist accountant will likely serve you just as well, for less. We're built for complexity, not simplicity.
Four Countries. Four Very Different Clocks.
Tax rules don't just differ by country, they run on completely different calendars, thresholds, and penalty structures. Here's a sample of what we track, right now, across the four markets we serve.
Economic Nexus
Since South Dakota v. Wayfair (2018), 45 states require registration once a seller crosses a threshold — commonly $100,000 in sales or 200 transactions, tracked separately per state.
VAT & Making Tax Digital
UK VAT sits at 20%, mandatory above £90,000 turnover. Every VAT-registered business must file through MTD-compatible software — the joint HMRC/Companies House portal closed in April 2026.
GST & BAS
GST registration is compulsory above AUD 75,000 turnover. Once registered, a Business Activity Statement is due every quarter, by the 28th of the month after each quarter ends.
UAE Corporate Tax
9% on profits above AED 375,000, 0% below. Small Business Relief lets qualifying businesses under AED 3M revenue elect zero tax — but that window closes end of 2026.
A documented process, from scoping to filing.
Click a step to see how it works.
Free consultation
We learn your entity structure, jurisdictions, and current filing status.
Scope & proposal
A clear list of deliverables, deadlines, and turnaround times.
Secure onboarding
NDA signed, access set up, prior filings reviewed.
Filing & advisory
Returns filed on schedule, with proactive advisory as rules change.
The advantage isn't the tax knowledge. It's who else is in the room.
Any competent firm can file a return correctly. What's harder to find is a tax team that already holds your bookkeeping, so nothing gets lost in a handoff between vendors, and a legal team one desk over when a filing decision touches company structure. That's the real difference between hiring “a tax guy” and partnering with Corptiva: the same team holds the full picture, not just this quarter's return.
Pricing depends on scope, not guesswork.
Entities
How many legal entities need filings.
Jurisdictions
How many countries or states you file in.
Frequency
Monthly, quarterly, or annual cadence.
There's no flat rate that fits a single-entity UK business and a five-country group the same way, so we don't pretend there is. Most engagements are scoped and quoted on the first call, not after weeks of back-and-forth.
Why not just hire a tax-only provider?
A fair question — here's how the trade-off actually looks.
Tax-Only Provider
Partnering with Corptiva
Case studies from this practice.
Untangling a three-country tax structure inherited from a prior accountant
What a documented review process looks like when a business discovers its existing filings don't line up across jurisdictions — and how that gets resolved without a repeat.
Fluent in the tools you already use.
What clients usually ask.
Yes — our International Services practice covers US GAAP, IFRS, UK VAT, Australia BAS, and UAE corporate tax, so multi-entity structures are handled by one team.
Yes — many engagements start as a scoped addition to an existing setup rather than a full replacement.
Pricing depends on entity complexity, jurisdictions involved, and filing frequency, scoped clearly on the first call.
Every filing is reviewed by a Chartered Accountant before submission specifically to catch this before it happens. If an error is identified post-filing, we manage the correction process directly with the relevant authority.
Yes — it's common for a business to bring us in for the jurisdiction causing the most friction, and expand from there once trust is established.
As early as possible, but we've onboarded businesses inside a single filing cycle when needed. The free consultation call will tell you honestly whether your timeline is workable.
One call to see if we're the right fit — no pitch, no pressure.
Tell us what you're dealing with — messy books, a firm outgrowing its bandwidth, a market you haven't worked in before. We'll tell you honestly whether Corptiva is the right partner for it.