Market Value Election: Paying SDLT Upfront vs Staircasing
A detailed comparison of the two SDLT elections for shared ownership, with worked examples at £250,000, £400,000 and £600,000.
Key Takeaways
- Market value election pays SDLT on 100% of property value upfront; staircasing election pays SDLT only on your share
- Market value election is irrevocable — once filed on the SDLT return it cannot be changed
- FTB relief applies to the full property value (up to £500k) under market value election, potentially making upfront SDLT zero
- Market value election eliminates all future SDLT on staircasing transactions, regardless of property value growth
- The break-even analysis must account for your full staircasing path, not just the initial purchase
- For FTBs on properties between £300k and £500k who plan to staircase fully, market value election is almost always better
- Above £500k, FTB relief is unavailable and market value election means paying higher SDLT on a large value
- Your solicitor must explicitly select the market value option on the SDLT1 form — confirm this before exchange
In this article
What Is the Market Value Election?
When buying a shared ownership property in England or Northern Ireland, you must choose between two methods for calculating your stamp duty land tax. The market value election is the option to pay SDLT on the full market value of the entire property at the time of your initial purchase, even though you are only buying a share.
The alternative — sometimes called the staircasing election — calculates SDLT only on the value of the share you are actually buying. See the initial share purchase guide for an overview of both elections in the context of your first purchase.
The market value election exists because HMRC recognises that shared ownership buyers who plan to staircase to full ownership might otherwise pay SDLT multiple times on the same property. By allowing an upfront election on the full value, HMRC effectively consolidates all future SDLT obligations into a single payment at the outset.
How SDLT Is Calculated Under Each Method
Standard SDLT rates apply under both methods — the difference is only in what figure the rates are applied to.
Staircasing Election: Rates Applied to Share Value
SDLT rates are applied to the price you pay for your initial share. For a 40% share of a £300,000 property, the SDLT calculation uses £120,000 as the consideration. Using standard rates: 0% on the first £125,000 (all £120,000 falls here) gives zero SDLT.
On each subsequent staircasing purchase (if you chose this election), SDLT is calculated afresh on the consideration paid for that additional share, applying the standard rate bands to just that purchase price.
Market Value Election: Rates Applied to Full Property Value
SDLT rates are applied to the full open market value of the property at the time of your initial purchase. For the same £300,000 property: 0% on £125,000 = £0; 2% on £125,001 to £250,000 = £2,500; 5% on £250,001 to £300,000 = £2,500. Total SDLT: £5,000. This is due in full at initial completion, regardless of your share percentage.
| Rate Band | SDLT Rate | FTB Rate |
|---|---|---|
| £0 – £125,000 | 0% | 0% |
| £125,001 – £250,000 | 2% | 0% (up to £300k) |
| £250,001 – £300,000 | 5% | 0% (up to £300k) |
| £300,001 – £500,000 | 5% | 5% (FTB relief stops at £500k) |
| £500,001 – £925,000 | 5% | 5% (no FTB relief) |
| £925,001 – £1,500,000 | 10% | 10% (no FTB relief) |
How to Make the Market Value Election
The market value election is made by your solicitor when completing the SDLT1 return, which is filed with HMRC after completion of your purchase. The return must be filed within 14 days of the effective date (usually completion day). Your solicitor selects the market value treatment option within the return, which formally records the election with HMRC.
You should discuss your preferred election with your solicitor before exchange of contracts — ideally during the early stages of the conveyancing process. The solicitor needs to know your intentions in advance, particularly regarding first-time buyer status, your share percentage, and your staircasing plans, to provide accurate advice on which election is more advantageous.
There is no separate form or application to HMRC for the election. It is built into the standard SDLT1 return. Your solicitor does not need to notify the housing association of your election choice, though it is good practice to keep a record of which election was made in case of any future queries when you staircase.
Irrevocable Choice: What That Means
The market value election is irreversible once filed. HMRC will not allow an amendment to change the election after the return has been submitted. This means that if you make the market value election and later decide you do not want to staircase, you have paid more SDLT than necessary with no recourse.
Similarly, if you do not make the market value election and later wish you had — for example because you discover staircasing SDLT will be significant — you cannot elect retrospectively. The decision is final at the point of your initial return filing.
Before You Decide
Instruct your solicitor to model both scenarios using the actual figures for your property, your initial share, and your intended staircasing path. A decision made on the basis of accurate calculations prevents costly regrets on an irrevocable election.
FTB Relief Advantage Under Market Value Election
The market value election combines powerfully with first-time buyer relief. FTB relief raises the nil-rate band from £125,000 to £300,000 and keeps the rate at 5% up to £500,000. Properties above £500,000 attract no FTB relief at all.
When a first-time buyer makes the market value election on a property valued at exactly £300,000, the entire value falls within the FTB nil-rate band — total SDLT is zero, yet no future staircasing SDLT will ever be due. This is the most tax-efficient outcome possible for any shared ownership purchase. For properties up to £500,000, FTB relief under market value election can save thousands compared to paying staircasing SDLT at standard rates in future years when FTB relief is no longer available.
Conversely, if you use the staircasing election as a first-time buyer and your initial share is under £125,000, you also pay zero SDLT initially. But when you later staircase — by which point you already own property — standard rates apply. The total SDLT paid across the full ownership journey could be considerably higher than under the market value election with FTB relief.
Worked Example: £250,000 Property, 50% Initial Share
Scenario Details
- Property market value: £250,000
- Initial share: 50% (£125,000)
- Buyer: First-time buyer, plans to staircase to 100%
- Future staircase: 50% at assumed same £250,000 value (£125,000)
Staircasing Election
| Initial SDLT on £125,000 | £0 |
| Staircase SDLT on £125,000 | £0 |
| Total SDLT | £0 |
Market Value Election (FTB)
| £0–£250,000 @ 0% (FTB band) | £0 |
| Future staircasing SDLT | £0 |
| Total SDLT | £0 |
Verdict: Both elections result in zero total SDLT at £250,000. The market value election provides the additional certainty of zero future staircasing SDLT, but has no SDLT cost advantage here. The staircasing election is arguably simpler for this scenario.
Worked Example: £400,000 Property, 40% Initial Share
Scenario Details
- Property market value: £400,000
- Initial share: 40% (£160,000)
- Buyer: First-time buyer, plans to staircase to 100%
- Future staircasing path: 30% at £420,000 value (£126,000), then 30% at £440,000 value (£132,000)
Staircasing Election (FTB initially)
| Initial: £160k share (FTB nil rate) | £0 |
| Staircase 1: £126k (std rates) | £20 |
| Staircase 2: £132k (std rates) | £140 |
| Total SDLT | £160 |
Market Value Election (FTB on £400k)
| £0–£300k @ 0% (FTB nil band) | £0 |
| £300k–£400k @ 5% | £5,000 |
| All staircasing SDLT | £0 |
| Total SDLT | £5,000 |
Verdict: At £400,000 with gradual staircasing, the staircasing election wins significantly because SDLT on each individual staircase purchase is very small. The market value election costs £5,000 more overall. The staircasing election is better here unless property values are expected to rise significantly before the final staircase.
Worked Example: £600,000 Property, 50% Initial Share
Scenario Details
- Property market value: £600,000
- Initial share: 50% (£300,000)
- Buyer: Standard buyer (not FTB), plans to staircase to 100%
- Future staircase: Remaining 50% at £650,000 value (£325,000)
Staircasing Election (std rates)
| Initial: £300k share | £5,000 |
| Staircase: £325k (std rates) | £6,250 |
| Total SDLT | £11,250 |
Initial: 0% on £125k + 2% on £125k + 5% on £50k
Market Value Election (std rates on £600k)
| £0–£125k @ 0% | £0 |
| £125k–£250k @ 2% | £2,500 |
| £250k–£600k @ 5% | £17,500 |
| All staircasing SDLT | £0 |
| Total SDLT | £20,000 |
Verdict: At £600,000 without FTB relief, the staircasing election saves £8,750 overall. The market value election only becomes competitive at this price point if property values rise very substantially before staircasing (making future staircasing SDLT much higher than modelled here). The staircasing election is better for non-FTBs at this value.
When Market Value Election Wins
The market value election outperforms the staircasing election in a specific set of circumstances:
- First-time buyer, property between £300,000 and £500,000, plan to staircase fully: FTB relief on the full market value can make the upfront SDLT competitive, and future staircasing SDLT — charged at standard rates — would almost certainly cost more in total.
- Rapid staircasing to 100% planned: If you intend to staircase in large increments quickly, the cumulative SDLT on those purchases could exceed the market value election upfront cost.
- Significant property value growth expected: Market value election locks in today's property value for SDLT purposes. If the property rises substantially before you staircase, the market value election could save SDLT on the appreciated value.
When Staircasing Election Wins
The staircasing election is the better choice in most other scenarios:
- Initial share under £125,000: Zero SDLT now, and each future staircase below the threshold is also zero. Very hard for market value election to beat this.
- Property above £500,000 (any buyer): FTB relief is unavailable above £500,000, so market value election means a large upfront bill with no discount. Staircasing limits SDLT to individual smaller share purchases.
- Uncertain about staircasing: If you might not staircase at all, paying market value SDLT is purely wasteful. Staircasing election only creates SDLT liability if and when you actually staircase.
- Standard buyer buying cheap property: Below £300,000 with a small share, the total SDLT on the full path is usually very low regardless, but staircasing election keeps upfront costs minimal.
Practical Considerations
Beyond the pure SDLT maths, several practical factors affect which election is right for you:
Cash availability: The market value election requires more cash at completion — sometimes thousands of pounds more than the staircasing election. If funds are tight, the staircasing election may be the only feasible option even if the market value election would save money over the long term.
Mortgage capacity: Some buyers fund SDLT from their mortgage through product structures or gifted deposits. If your mortgage capacity is stretched, a lower initial SDLT bill could matter.
Solicitor advice: The election is a legal decision with long-term financial consequences. Always take specific legal advice — not just general guidance — before deciding. Your solicitor should calculate both options with your actual figures.
For further context on how staircasing SDLT works in practice once the election is made, see the staircasing stamp duty guide and the shared ownership complete guide.
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Disclaimer: This tool does not constitute financial advice. We do not recommend taking actions based solely on these results. The calculator makes assumptions and results may be inaccurate due to changes in government policy, interest rates, or personal circumstances. You use this information at your own risk. We can't guarantee to be perfect, so do note you use the information at your own risk and we can't accept liability if things go wrong. For official guidance, visit Gov UK.
Frequently Asked Questions
What is the market value election for shared ownership?
The market value election is the option to pay SDLT on the full open market value of the property at the time of your initial shared ownership purchase. Once made, no further SDLT is due on any future staircasing transactions. The alternative is the staircasing election, which calculates SDLT only on your initial share and each future staircase purchase separately.
When is the market value election better than the staircasing election?
The market value election is generally better for first-time buyers on properties between £300,000 and £500,000 who plan to staircase to full ownership. FTB relief on the full market value can make the upfront SDLT zero or very low, while future staircasing SDLT at standard rates could be considerably higher. It is also advantageous if significant property value growth is expected before staircasing.
Can I change my mind after making the market value election?
No. The market value election is irrevocable once made on the SDLT return. This is why calculating both options carefully before filing is essential. Your solicitor cannot amend the election after submission, and HMRC will not allow retrospective changes.
Does market value election apply to resale shared ownership?
Yes. The same two elections are available on resale shared ownership properties. You can elect to pay SDLT on the full market value of the resale property, or pay only on the share being purchased. The rules and consequences are identical to new shared ownership.
What does "full market value" mean for the election?
Full market value means the price the property would achieve if sold on the open market at the date of your purchase. This is usually the price agreed between you and the housing association (or seller in a resale) as confirmed by a RICS valuation. It is the total property value — not just your share — that forms the basis of SDLT under the market value election.
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Emma Richardson, MRICS
Chartered Surveyor & Property Tax Specialist
Emma Richardson is a RICS-qualified Chartered Surveyor with over 12 years of experience in UK property taxation. She founded Stamp Duty Calculator to help buyers understand the complex world of property transaction taxes.