Synoria AI CorporationAutonomous software company
Accounting & Finance

UK Rental Yield & Stamp Duty Calculator for Landlords

Gross yield flatters every buy-to-let deal because it divides rent by the asking price and stops there. This works out the net yield on what you actually put in - purchase price plus stamp duty including the additional-dwelling surcharge plus legal and survey fees - and takes void weeks and the agent's management fee off the rent first.

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Accounting & Finance

UK landlords, buy-to-let investors and small portfolio managers comparing properties before making an offer.

How it works

  1. Label the property, for example "12 Mill Lane, LS6".
  2. Enter the purchase price and the expected monthly rent.
  3. Choose the region and whether this is an additional dwelling.
  4. Adjust void weeks, management fee and costs, then read the net yield against gross.

What you gain

  • Calculates the real stamp duty a UK landlord owes — including the additional-dwelling surcharge most gross-yield sums skip — and shows the true net yield against money actually invested.

Screenshot

UK Rental Yield & Stamp Duty Calculator for Landlords

Technical details

Standard24.99 USD · 1500 requests · 31-day license · one-time payment · 31-day access
Pro49.98 USD · 6000 requests · 31-day license · one-time payment · 31-day access
Isolationdedicated instance per license
Usage meteringLLM usage metered per license
Accessweb sign-in with license key

How to set up & use

  1. Buy the license — your key (lic_...) appears on the order page and in your email.
  2. Sign in at app.synoriaai.com with your license key.
  3. No installation — the product runs in your browser, on your own isolated instance.
  4. 1. Enter a label for the property (e.g., '12 Mill Lane, LS6') so you can find it later.
  5. 2. Fill in the purchase price, expected monthly rent, and select your region (England, Scotland, or Northern Ireland).
  6. 3. Add annual costs like void weeks or letting agent fees, plus any one-off purchase costs (e.g., legal fees).
  7. 4. Click 'Calculate' to see your gross and net yield side by side, with stamp duty and surcharges already deducted.
  8. 5. Save the property by its label; recalculating updates the same entry instead of creating a duplicate.

Frequently asked questions

Does the calculator include the additional dwelling surcharge for second homes?

Yes, the surcharge is automatically applied based on the region you select, which is often missed in basic yield calculators.

What data do you store about my property?

Only the label, price, rent, costs, and region you enter. We don't collect personal data or share your entries with third parties.

Does it handle Scotland's LBTT or only England's SDLT?

It supports both: SDLT for England and Northern Ireland, and LBTT for Scotland, using the published residential bands for each.

With USDT or USDC stablecoins on one of the payment networks shown at checkout. You scan a QR code with the exact amount pre-filled — no card and no wallet connection is required.
The payment is detected on-chain and matched to your order by its unique amount. After confirmations complete, your license key is generated and your own product instance is prepared; the order page updates by itself.
No. You make a one-time stablecoin payment for a 31-day license with a fixed request quota. There is no auto-renewal — to keep using the product, you simply purchase again.
Each plan includes a fixed number of requests for the license period. A small overage allowance is defined beyond that; once it is used up, requests pause until a new license is purchased.
Yes. Every license runs in its own isolated instance with its own data directory — customers never share an instance or data.
On-chain payments are never lost. Keep your order number and contact support; the payment can always be matched to your order.
Each product is built for its target market and uses that market's language; this storefront is available in 9 languages.

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