Stamp Duty Tax Specialists
Buying a home is stressful enough, but did you know Stamp Duty is not your solicitor’s responsibility?
Solicitors are legal advisers, not tax specialists. Many use HMRC’s basic calculator, which can be wrong, leaving you to pay the price.
In Angela Rayner’s case, her law firm confirmed they gave no tax advice. If even high-profile buyers can be caught out, it shows how complex Stamp Duty really is.
Without a specialist check, you could be paying thousands more than you should for your Stamp Duty Land Tax - known as SDLT.
70% of our calculations save purchasers money
- Residential
- Commercial
- Leasehold
You might think your Stamp Duty just sits within a ‘band’
Most buyers assume Stamp Duty is calculated in straightforward bands, like council tax. In fact, it’s much more complex, with multiple factors that affect the final bill. A basic calculation can leave you overpaying.
Each year, over £2 billion of Stamp Duty is overpaid to HMRC. That means thousands of homebuyers are paying more than they should.
One of the biggest problems is that free calculators, including HMRC’s, are too basic. They cannot take account of all the different scenarios that apply to UK property transactions.
Miss just one detail, and the cost/overpayment can run into thousands.
Why you shouldn't use a free online calculator
Let our specialist tax advisors give you a guaranteed calculation that is accurate and fully protected, so you have complete peace of mind over your finances.
We know you may be wondering: what happens when it goes wrong? Unfortunately, you are the one who pays. We take the guesswork, risk, and worry out of Stamp Duty.
Our quote engine gives you expert Stamp Duty Land Tax advice. Our specialists check every possible relief, surcharge, and scenario to make sure you never pay more than you should.
Frequently Asked Questions
After you engage, you’ll receive access to the Compass Client Portal, a secure, purpose-built platform that guides you through every relevant detail of your transaction. It reviews all potential stamp duty land tax scenarios (including complex structures, reliefs, exemptions, and surcharges) to ensure nothing is missed, enabling a fully accurate, HMRC-compliant calculation with confidence.
Less than 3 minutes. Your personalised quote appears instantly on screen.
Need help before proceeding? Our team is on hand to assist and make sure you’re comfortable every step of the way.
Once your personalised assessment is complete, you’ll receive:
- Compass Tax Calculation Certificate confirming your land tax position
- Audit Document with a detailed breakdown of your responses and our assessment
- Aftercare support for follow-up questions or if HMRC requests further information
You’ll also have full support throughout, with access to tax technical specialists whenever required.
What our clients say
Understand Your Stamp Duty Costs Upfront
Get peace of mind with a 100% accurate stamp duty calculation.
Accurate, indemnified results
Our calculations are backed by indemnity, which protects you if HMRC ever challenges them.
Fast
turnaround
No delays, just reliable answers.
Clear reports in plain English
They are ready to share with your solicitor and are fully understood by you.
Lower cost than most tax advisers
Without cutting corners on accuracy.
Why You Need a Paid Calculation
An often-overlooked tax, Stamp Duty is something your solicitor or estate agent does, right?
Well, kind of. In reality, your solicitor files the submission to the Land Registry, but getting the calculation correct is less straightforward.
The rules change, and reliefs and surcharges can complicate even a “simple” purchase. Does that dream home you’re looking at have an annexe? Is it mixed use or shared ownership? A lot to think about.
Find out how much an accurate calculation for your property purchase will be:
Don't just take our word for it
Even law firms refer their clients to us
“This was a no brainer for me. Yes, I had to pay for the Stamp Duty calculation work but I saved thousands against what the solicitor advised I would have to pay.”
— Cameron
“My Stamp Duty calculation reduced by nearly half! My Solicitor also commented that they state in their client care letter, that they aren’t tax experts.”
— Martin
“The best £350 I have ever spent! Compass calculated my Stamp Duty and I saved £2500 based on what my solicitor had calculated from HMRC website.”
— Craig
Get Your Personalised Stamp Duty Calculation in 3 Simple Steps
Enter your details below and answer a few quick questions.
We’ll produce a quote to calculate your Stamp Duty.
Accept your quote and we’ll calculate exactly how much you owe.
How it works
Compass is a personalised Stamp Duty calculation, not a one-size-fits-all check. We look at your specific property details and circumstances, including any special situations or extra costs, to make sure nothing is overlooked. An accurate, HMRC-compliant calculation, tailored just for you, so you can move forward with confidence.
What you'll receive
An accurate, HMRC-compliant calculation, tailored just for you, so you can move forward with confidence.
- A Tax Calculation Certificate confirming your Stamp Duty amount.
- An Audit Document with a detailed breakdown opf your responses and our assessment.
Full support included
Whenever you need expert guidance, our tax specialists are just a call away. And even after your calculation is complete, we’ll be here to answer any follow-up questions or help if HMRC asks for more information.
Why Choose Compass?
More than 2/3 of Stamp Duty is miscalculated every year, adding up to more than £2 billion in overpayments.
Stamp Duty is worked out as a percentage of the property value, but there are discounts and special rules that often get missed or applied incorrectly.
We make Stamp Duty simple with our powerful all-in-one quote engine. Fast, easy to use, and 100% accurate: no more guesswork, no more overpayments.
- Smarter Stamp Duty Land Tax calculations – instant clarity, zero risk.
- The UK’s only tech-led Stamp Duty solution – built by tax specialists.
- Fast, scalable, and always up to date – no human error, no delays.
- Did you know? – 30% of Stamp Duty is miscalculated every year, contributing to a £2 billion+ loss. We simplify Stamp Duty with our powerful, all-in-one quote engine.
Ryan Hannah – Managing Director
Don’t Risk It – Get Your Calculation Today
Stamp Duty mistakes are expensive, stressful, and can put the buying of your perfect home at risk.
Our intelligent quote engine is the safety net that makes sure you pay what’s right - not a penny more, not a penny less.
We handle Stamp Duty, so you don’t have to.
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