Built for UK conveyancing firms · HMRC-compliant · Accurate to the penny
Post-completion shouldn't be this painful
Every completion triggers a cascade of deadlines, filings, and follow-ups. Miss one and your client pays the price.
14 days to file SDLT
Miss the deadline and your client gets an automatic £100 penalty — rising to £200 after 3 months, plus daily penalties and interest.
Manual re-keying
The same client, property, and transaction data gets typed into SDLT forms, Land Registry applications, and your case management system separately.
No visibility
Which completions need SDLT filing? Has the SDLT5 come back? When does the priority search expire? It's all in someone's head or a spreadsheet.
File SDLT in three steps
No training required. If you can use a web browser, you can use StampSorted.
Enter the details
Property, buyer, consideration — our guided wizard walks you through every field HMRC needs. Auto-calculates SDLT in real time.
Review & sign
Check the band breakdown, preview the HMRC XML, and sign the declaration. Everything validated before it leaves your screen.
Submit & track
We send the return to HMRC and track it through to SDLT5. You get notified at every stage — no chasing, no guessing.
One platform for everything after exchange
StampSorted handles the post-completion workflow end to end — so you can focus on your clients, not chasing deadlines.
SDLT Filing
LiveCalculate, validate, and submit SDLT returns directly to HMRC. Residential, commercial, leases, linked transactions — all supported.
Post-Completion Tracking
LiveEvery completion on one dashboard — SDLT status, filing deadlines, SDLT5 certificates, penalty alerts. Nothing slips through.
Multi-User Firms
LiveInvite your team, share returns across the firm, manage permissions. Everyone sees the same data — no more emailing spreadsheets.
Land Registry AP1
Coming soonSubmit AP1 applications to HM Land Registry via Business Gateway. Auto-populated from your SDLT filing data — no re-typing.
What conveyancers are saying
“We were spending 20 minutes per return re-keying data into HMRC forms. StampSorted cut that to under 5 minutes.”
Sarah T.
Senior Conveyancer · Midlands practice, 3 fee earners
“The deadline tracking alone is worth it. We had two near-misses last year — haven't had a single one since switching.”
James W.
Partner · High street firm, Birmingham
“Finally, SDLT software that doesn't look like it was built in 2005. My team actually enjoys using it.”
Priya M.
Head of Residential · Regional firm, 12 conveyancers
Free tools you can use today
No sign-up required. Professional-grade tools for conveyancers.
SDLT Calculator
Calculate stamp duty for any scenario — residential, commercial, first-time buyer, additional properties, non-residents, and companies. Accurate to the penny.
Calculate now→Registration Checker
Find out if your firm needs to register with HMRC as a tax adviser by May 2026. Two-minute assessment with a personalised action plan.
Start assessment→HMRC Compliant
XML schema v6.3
AES-256 Encryption
Credentials encrypted at rest
UK Hosted
Data never leaves the UK
99.9% Uptime
Hosted on Vercel Edge
Why firms are switching
Legacy SDLT software was built for a different era. Here's what makes StampSorted different.
| Feature | StampSorted | Legacy tools |
|---|---|---|
| Modern web interface | Yes | No |
| No desktop install required | Yes | No |
| Free tier (3 returns/mo) | Yes | No |
| Lease & linked transaction support | Yes | Varies |
| Multi-user per firm | Yes | Extra cost |
| Filing deadline alerts | Yes | No |
| Transparent flat-rate pricing | Yes | No |
| Audit trail included | Yes | Premium only |
Common questions
Is my data secure?
Yes. All HMRC credentials are encrypted with AES-256-GCM at rest. Your data is hosted in UK data centres and we never share it with third parties. We use HTTPS everywhere and session tokens are cryptographically secure.
Do I need to install any software?
No. StampSorted is a modern web application that works in any browser. No desktop software, no Java, no plugins — just log in and go.
What if I'm already using InfoTrack or Oyez?
You can run StampSorted alongside your existing tools while you evaluate it. Our free tier gives you 3 returns per month at no cost. Most firms switch fully within a week.
Can my whole team use it?
Yes. Every plan supports multiple users per firm. The admin can invite team members, and everyone sees the same returns, deadlines, and SDLT5 certificates.
What types of SDLT return does it support?
Residential purchases, commercial/mixed-use, first-time buyers, additional properties, non-resident surcharge, company purchases, linked transactions, and leases (including NPV calculations). All buyer types, all reliefs.
Is there a contract or commitment?
No. All plans are month-to-month. You can upgrade, downgrade, or cancel at any time. The free tier is free forever — no credit card required.