From today, OneSearch customers can manage and track their post-completion SDLT and LTT calculations directly within our platform, alongside local authority searches, environmental reports, and other essential conveyancing tools. This integration brings everything together in one place, saving time and reducing risk.
4Stamp is a cloud-based solution which allows all parties access to all the updates, data, and information required to provide a certified, accurate assessment of the purchasers’ property tax liability
“We have always been dedicated to setting the gold standard for accuracy and trust in the property market,” said Liz Jarvis, Managing Director of OneSearch. “Our partnership with 4Stamp is a natural extension of this promise. By integrating their certified, expert-backed solution into our platform, we are giving our clients end-to-end confidence, from the initial search all the way through to the final tax calculation.”
Richard Friend, Managing Director at 4stamp Ltd added, “We are thrilled to partner with OneSearch, a company that shares our core values of data integrity and professional excellence. Their market-leading platform provides the perfect home for our service. Together, we are taking the mystery out of Stamp Duty Land Tax and empowering legal professionals to eliminate risk and streamline their workflow.”
Generic online calculators can be risky, often failing to account for all variables and exposing your firm to potential liability. In fact, 8% of customers overpay on their property tax, a statistic that highlights the need for a better solution.
4Stamp is not another calculator. It’s a comprehensive, certified assessment that considers the purchaser’s circumstances, the property, and the transaction vehicle. This is why it’s trusted by professionals.
By using 4Stamp via OneSearch, you will:
- Eliminate Risk:Move beyond generic calculators and get a precise, certified tax assessment.
- Gain Protection:Every calculation is backed by professional indemnity insurance, transferring liability away from your firm.
- Save Time:Instantly get a certified value or immediate access to tax advisors for complex cases.
- Ensure Compliance:Every assessment includes a certified PDF and a full audit trail for your records.
At OneSearch, we have always been about empowering legal professionals with speed, confidence, and protection. Now, we’re bringing that same promise to the final, critical step of every property transaction.
Start eliminating SDLT risk today – explore the OneSearch and 4Stamp integration and see how certified tax calculations can safeguard your next transaction
https://onesearch.direct/products/4stamp/










