Buy-to-let investors face the highest stamp duty costs of any property buyer. On top of the standard SDLT rates, you pay the 5% additional property surcharge — a flat percentage applied to the entire purchase price. But there's a frequently overlooked opportunity: if your BTL property came with any moveable contents — carpets, curtains, white goods, furniture — you almost certainly overpaid SDLT on those items too.
This guide explains both opportunities: the surcharge, the chattels overpayment, and exactly how to claim each one back.
The double opportunity for landlords
When you buy a buy-to-let property, you're subject to two layers of SDLT cost that most owner-occupiers don't face:
Layer 1: The 5% surcharge
Applied to the entire purchase price on any additional residential property above £40,000. This cannot be reclaimed unless specific conditions are met.
Layer 2: Chattels overpayment
SDLT paid on moveable items like carpets, curtains, and furniture. This can be reclaimed within 4 years — and BTL properties often have higher chattel values.
Most landlords focus on the surcharge and overlook the chattels opportunity entirely. But for furnished or part-furnished BTL properties, the chattels refund can be a straightforward way to recover money you're legally entitled to.
The 5% surcharge explained
The additional property surcharge was introduced in April 2016 at 3% and increased to 5% on 31 October 2024 as part of the Autumn Budget. It applies to any purchase of an additional residential property above £40,000 — which includes virtually every BTL purchase.
Unlike the standard SDLT bands, the surcharge is added to every band, not just the top slice. This means it's calculated on the entire purchase price, making it a substantial additional cost.
Worked example: £400,000 BTL property
Standard SDLT: £7,500
5% surcharge (£400,000 × 5%): £20,000
Total SDLT paid: £27,500
The surcharge alone is nearly three times the standard SDLT bill.
Can you reclaim the surcharge?
For most BTL investors, the surcharge is a permanent cost. You can only reclaim it if:
- You bought the property as a replacement main residence (not as a pure investment) and sold your previous main home within 3 years of the purchase
- You use HMRC's SDLT16 form to claim the refund within 12 months of selling the old property (or 12 months from the filing date, whichever is later)
If you bought purely as a buy-to-let investment and it was never intended to be your main residence, the surcharge cannot be reclaimed. However, you can still claim back overpaid SDLT on chattels — and that's where the real opportunity lies for most landlords.
For more detail on surcharge refunds, see our guide on second home stamp duty refunds.
Chattels in buy-to-let properties
BTL properties often come with more chattels than owner-occupied homes — especially if they're sold as furnished or part-furnished investments. Every moveable item included in the purchase price should have been deducted from the chargeable consideration before SDLT was calculated. If it wasn't, you've overpaid.
Furnished BTL properties
A fully furnished buy-to-let can have substantial chattel values. Here's what typically qualifies:
- Full furniture packages: beds, mattresses, sofas, dining tables, chairs, wardrobes, desks, bedside tables — second-hand value can easily reach £3,000-£8,000
- Carpets throughout: even basic rental-grade carpets in a 2-bed flat have a second-hand value of £500-£1,500
- Curtains and blinds: on every window — typically £400-£1,500
- White goods: fridge-freezer, washing machine, tumble dryer, dishwasher — £500-£2,000 depending on quality and age
- Light fittings: pendant shades, table lamps — £100-£400
- Kitchen accessories: crockery, cutlery, cookware (if included) — £100-£300
In total, a furnished BTL property could have £5,000-£15,000 or more in chattel value. Even at the lower end, the SDLT saving is worth claiming.
Worked example: £500,000 furnished BTL
Chattels valued at: £15,000
SDLT on £500,000 (with 5% surcharge): £27,500
SDLT on £485,000 (with 5% surcharge): £26,750
Potential refund: £750
Not a life-changing amount, but it's money you're legally owed — and claiming it takes less time than it took you to arrange your BTL mortgage.
Unfurnished BTL properties
Even unfurnished BTL properties usually include some chattels — carpets are the most common, followed by curtains or blinds, white goods, and light fittings. A typical unfurnished BTL might have £3,000-£8,000 in chattel value. The SDLT saving is smaller, but it's still worth checking.
HMO and multi-let properties
Houses in multiple occupation (HMOs) and multi-let properties often have even higher chattel values because each room is furnished separately. A 6-bed HMO with furnished rooms, a communal kitchen, and shared living areas could have £15,000-£25,000 in chattels. At higher SDLT rate bands, this can translate to a refund of £1,500-£3,000.
Portfolio landlords: check every purchase
If you own multiple buy-to-let properties, each purchase is a separate SDLT transaction with its own 4-year claim window. This means you should review every BTL purchase you've made in the last 4 years.
A portfolio landlord who bought 5 properties in the last 4 years — each with £5,000-£10,000 in chattels — could be looking at a combined refund of several thousand pounds. Each claim is independent, so even if one property has a small chattel value, the total across your portfolio can be significant.
Portfolio tip
Start with your highest-value and most recently purchased properties. The higher the purchase price, the higher the marginal SDLT rate, and the more each pound of chattel deduction is worth. And the more recently you purchased, the more time you have before the 4-year deadline.
Valuations for BTL chattels
HMRC expects chattel valuations to be based on second-hand values — what the items would fetch if sold on the open market in their current condition. For rental properties, this means accounting for wear and tear, which is typically significant.
Here are some practical guidelines for valuing BTL chattels:
- Furniture packages: landlord furniture packs bought new for £3,000-£5,000 typically have a second-hand value of £1,500-£3,000 depending on age and condition
- White goods: rental-grade appliances depreciate quickly. A set bought for £1,500 might have a second-hand value of £400-£800 after a few years
- Carpets: rental-grade carpets depreciate faster than premium residential ones. Value at 30-50% of replacement cost, adjusted for age
- Support your valuations with comparable prices from online marketplaces (eBay, Facebook Marketplace, Gumtree). HMRC may query valuations that appear inflated.
How to claim
The claiming process for BTL chattels refunds is the same as for any other property:
For portfolio landlords
If you're claiming for multiple properties, a specialist can handle all claims simultaneously, often at a reduced fee per property. This is typically more efficient than submitting individual claims yourself.
Tax deductibility
One additional consideration for landlords: the SDLT refund itself is not taxable income. You originally paid SDLT as part of the property acquisition cost, and the refund simply corrects an overpayment. It does not need to be declared as rental income.
However, if you previously claimed SDLT as an allowable expense against Capital Gains Tax (as part of your acquisition cost), a refund would reduce that allowable cost. Keep records for your accountant.
Check your BTL refund
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