Right to Buy Stamp Duty Guide 2026
How stamp duty applies to Right to Buy council house purchases, including the RTB discount, eligibility for first-time buyer relief, and Right to Acquire.
Key Takeaways
- SDLT is calculated on the discounted purchase price after the Right to Buy reduction, not the market valuation. With the maximum discount now £16,000 to £38,000, that is worth up to about £1,900 in SDLT at the 5% band
- RTB maximum cash discounts dropped from £102,400 (£136,400 in London boroughs) to £16,000-£38,000 by region on 21 November 2024, reducing SDLT savings for new applicants
- First-time buyers can combine RTB discount with FTB relief. Most purchases fall below £300k threshold after discount, resulting in zero SDLT
- Preserved Right to Buy (housing association transfers) uses identical SDLT treatment. Discount is based on total tenancy including council years
- Right to Acquire offers smaller fixed discounts (£9,000-£16,000) rather than percentage-based. SDLT savings are proportionally lower
- Selling within 5 years triggers repayment of RTB discount to the council on a sliding scale, but does NOT affect SDLT already paid at purchase
- Scotland abolished RTB in August 2016 and Wales in January 2019. Historical purchases used LBTT/LTT on discounted price
- Market valuation determines discount percentage but has no impact on stamp duty. HMRC only taxes the actual consideration paid
How Right to Buy Discount Works for SDLT
Right to Buy allows council tenants to purchase their home at a discount. The discount depends on how long you've been a tenant:
- Houses: 35% for 3 to 5 years as a public sector tenant, then 1% for each further year, up to 70% of the value
- Flats: 50% for 3 to 5 years as a public sector tenant, then 2% for each further year, up to 70% of the value
- Maximum cash discount: £16,000 to £38,000 depending on region (reduced from 21 November 2024). You get whichever is lower, the percentage discount or the regional cash cap
For stamp duty purposes, you pay SDLT on the discounted purchase price you actually pay, not the property's market value. Use our stamp duty calculator to see the exact tax on your discounted price.
Key Point:
Stamp duty is calculated on the amount you pay after the Right to Buy discount is applied, which can significantly reduce your SDLT bill.
SDLT Calculated on Discounted Price
HMRC treats the discounted purchase price as the consideration for stamp duty purposes. This is the actual amount you pay, not the market valuation, following the current stamp duty rates.
Example Calculation
Market value: £300,000
Your RTB discount: capped at £38,000 (South East regional cap)
Purchase price: £262,000
SDLT calculation:
- £0 - £125,000: 0% = £0
- £125,001 - £250,000: 2% = £2,500
- £250,001 - £262,000: 5% = £600
- Total SDLT: £3,100
Standard residential rates apply (0% up to £125,000, 2% £125,001-£250,000, 5% £250,001-£925,000, 10% £925,001-£1.5m, 12% above £1.5m). The discount means many Right to Buy purchases fall below or just above the £125,000 nil-rate threshold.
Preserved Right to Buy
Preserved Right to Buy (PRTB) applies when council housing stock has been transferred to a housing association. If you were a secure council tenant before the transfer, you retain your Right to Buy rights.
Key Features
- Same discount entitlement as standard Right to Buy
- Discount based on your total tenancy period (including time as a council tenant)
- Same maximum discount caps apply (£16,000 to £38,000 depending on location)
- Stamp duty calculated on discounted price in the same way
From an SDLT perspective, there's no difference between standard RTB and PRTB. Both use the discounted purchase price for stamp duty calculation.
Right to Acquire for Housing Associations
Right to Acquire is a separate scheme for housing association tenants who don't qualify for full Right to Buy. It offers smaller, fixed discounts:
- Range: £9,000 to £16,000, set by the region the property sits in
- Fixed cash sum: the discount is not a percentage of value, so it does not grow with a longer tenancy
- Check your figure: your landlord confirms the exact regional amount before you apply
Stamp Duty Treatment
Stamp duty is calculated on the purchase price after the Right to Acquire discount. Because the discounts are smaller than RTB, the SDLT saving is also smaller.
Example: Right to Acquire at the £16,000 maximum discount
Market value: £280,000
Right to Acquire discount: £16,000
Purchase price: £264,000
SDLT:
- £0 - £125,000: 0% = £0
- £125,001 - £250,000: 2% = £2,500
- £250,001 - £264,000: 5% = £700
- Total SDLT: £3,200
First-Time Buyer Relief Eligibility
If you've never owned property before (in the UK or worldwide), you can claim first-time buyer stamp duty relief on your Right to Buy purchase. Check the FTB relief eligibility criteria to confirm you qualify. This relief is assessed on the discounted price.
FTB Relief Rates
- £0 - £300,000: 0%
- £300,001 - £500,000: 5%
- Above £500,000: Not eligible for FTB relief (standard rates apply)
Good News for First-Time Buyers:
Most Right to Buy purchases after discount fall well below £300,000, meaning first-time buyers pay zero stamp duty. Use our first-time buyer calculator to confirm your exact figure. This combines two major tax advantages.
FTB Example: Right to Buy in Manchester
Market value: £180,000
RTB discount (50%): £90,000 (capped at £26,000, the North West cap)
Purchase price: £154,000
First-time buyer? Yes
SDLT with FTB relief: £0
(Below £300,000 FTB threshold)
Annexe, land or an old home not sold yet?
These are the purchases where a standard calculator can get your stamp duty wrong. Get it checked before you exchange.
Scotland and Wales
Right to Buy has been abolished in Scotland (2016) and Wales (2019). However, the same principles applied historically.
Scotland (LBTT)
If you purchased under RTB before August 2016, you paid Land and Buildings Transaction Tax (LBTT) on the discounted price. Scotland's LBTT has different rates and bands:
- £0 - £145,000: 0%
- £145,001 - £250,000: 2%
- £250,001 - £325,000: 5%
- £325,001 - £750,000: 10%
- Over £750,000: 12%
Wales (LTT)
RTB purchases before January 2019 used Land Transaction Tax (LTT) on the discounted price:
- £0 - £225,000: 0%
- £225,001 - £400,000: 6%
- £400,001 - £750,000: 7.5%
- £750,001 - £1.5m: 10%
- Over £1.5m: 12%
Practical Examples
Example 1: Council Flat in Birmingham
Scenario: 12 years as tenant, buying a flat
Market value: £160,000
RTB discount: 64% (50% + 7 years × 2%) = £102,400 (capped at £26,000, the West Midlands cap)
Purchase price: £134,000
First-time buyer: No
SDLT: £180
(2% on £9,000 above the £125,000 threshold)
Example 2: Council House in London
Scenario: 20 years as tenant, buying a house
Market value: £450,000
RTB discount: 50% (35% + 15 years × 1%) = £225,000 (capped at £16,000, the London cap)
Purchase price: £434,000
First-time buyer: Yes
SDLT with FTB relief:
- £0 - £300,000: 0% = £0
- £300,001 - £434,000: 5% = £6,700
- Total: £6,700
Example 3: Housing Association (Right to Acquire)
Scenario: Housing association tenant, South East England
Market value: £235,000
Right to Acquire discount: £11,000
Purchase price: £224,000
First-time buyer: Yes
SDLT with FTB relief: £0
(Below £300,000 FTB threshold)
Common Questions
Do I need to tell HMRC about the Right to Buy discount?
Your solicitor will handle the SDLT return, reporting the discounted purchase price as the consideration. The RTB discount is factored into the price shown on the purchase documentation.
Can I claim the 5% surcharge refund if I sell my previous home?
Right to Buy means you are purchasing the home you already live in, so there is normally no previous main residence to sell and no surcharge to reclaim. The surcharge can still bite if you already own another residential property worth £40,000 or more, because the test is how many dwellings you own at the end of the day you complete.
What if I sell within 5 years and have to repay discount?
If you sell within 5 years, you must repay some or all of the RTB discount to the council. However, this doesn't affect the stamp duty you already paid. SDLT is assessed at the time of purchase based on the discounted price.
Does the market valuation affect my SDLT?
No. The market valuation is used to calculate your discount, but SDLT is charged only on the actual purchase price you pay after the discount.
Reviewed by
Julie White
ACASDLT Expert since 1999Stamp Duty Land Tax Specialist
ACA and Tax Adviser with a career spanning nearly four decades, specialising in SDLT planning and advisory work since 1999.