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Advanced Taxation (UK) · Legitimate tax planning measures

SDLT and Stamp Duty Planning for ATX-UK

Updated 11 October 2026 · Fact-checked

SDLT is a tax on land transactions. Non-residential SDLT is charged in slices: 0% to £150,000, 2% to £250,000, 5% above. Stamp duty is 0.5% on share transfers. To plan, you compare the structures on offer, calculate each tax, and recommend the cheapest legitimate route.

Understand Stamp Taxes Planning: SDLT and Stamp Duty

Stamp taxes are one-off taxes on the transfer of assets. You meet two in ATX-UK. Stamp duty land tax (SDLT) applies to land and buildings. Stamp duty applies to transfers of shares. They are different taxes with different rules. Do not mix them up.

For non-residential property, SDLT is charged like income tax bands. Each slice of the price is taxed at its own rate. The tax tables give 0% up to £150,000, 2% from £150,001 to £250,000 and 5% above £250,000. Only the slice in each band bears that band's rate. The whole price is not taxed at the top rate.

Stamp duty on shares is simple. The rate in the tax tables is 0.5% of the consideration. It is a flat rate with no bands and no nil rate slice. The buyer normally pays it.

Planning means asking what choices the client has. The price can be fixed, but the structure can change. A buyer may buy shares in a company or buy its assets. The buyer of shares pays 0.5%. The buyer of non-residential property pays SDLT, which can reach 5% on the top slice. For a company owning an expensive building, a share purchase may therefore cost less in stamp taxes. But other taxes also matter, so never decide on stamp taxes alone.

Also check whether the price is split sensibly. Only the part of the price that is truly for land is subject to SDLT. Any split must be commercially genuine and supportable. Aggressive allocations are not acceptable planning. Say so in your answer.

Key rules to remember

Non-residential SDLT bands
Up to £150,000: 0% | £150,001 to £250,000: 2% | £250,001 and above: 5%
Applied slice by slice. Maximum tax on a price above £250,000 is (£100,000 × 2%) + ((price − £250,000) × 5%) = £2,000 + 5% of the excess.
Stamp duty on shares
Stamp duty = consideration × 0.5%
Flat rate from the tax tables. Do not apply SDLT bands to shares.
Saving from a structure change
Saving = stamp taxes under current route − stamp taxes under alternative route
Compare the total cost to the client, including other taxes, before you recommend.

How to solve Stamp Taxes Planning: SDLT and Stamp Duty questions

Use this method for any stamp taxes planning requirement. Keep it short and tie it to the scenario.

  1. 1Identify the asset being transferred: land and buildings (SDLT) or shares (stamp duty).
  2. 2Confirm the property is non-residential. The tax tables only give the non-residential rates, so use them.
  3. 3Pick out the price or consideration and who is the buyer. The buyer normally pays.
  4. 4Calculate the tax. For SDLT, work through each band. For shares, multiply by 0.5%.
  5. 5If a choice exists, such as buying shares or assets, calculate the stamp taxes on each route and compare.
  6. 6Consider other taxes that change with the structure, such as VAT, capital gains and income tax, then give a reasoned recommendation.
  7. 7State that the plan must be genuine and commercially supportable, and that artificial arrangements carry risk.

Quickest way: Band and flat-rate check

When to use it: Use when the question gives a price and asks for the stamp tax cost or saving.

  1. Write the three SDLT bands in the margin straight from the tax tables.
  2. For prices above £250,000, compute £2,000 plus 5% of the excess over £250,000.
  3. For shares, multiply by 0.5% and round to the nearest £.
  4. Subtract the two totals to get the saving. Then write one line on non-tax factors.

Common mistakes in Stamp Taxes Planning: SDLT and Stamp Duty

  • Applying the top SDLT rate to the whole price.

    Students treat the table as a single rate bracket.

    Fix: Tax each slice at its own rate. Show a line for each band in your working.

  • Using SDLT rates on a share purchase.

    Both are called stamp taxes and students blur them.

    Fix: Shares carry stamp duty at 0.5% of consideration. SDLT is for land only.

  • Forgetting the 0% slice or the £2,000 on the middle band.

    Rushing and skipping the lower bands.

    Fix: The middle band covers £100,000 at 2%, which is £2,000, once the price exceeds £250,000.

  • Recommending a share purchase on stamp taxes alone.

    The saving looks large and other taxes are ignored.

    Fix: Mention the knock-on effects, such as inheriting the company's liabilities and different tax outcomes for the seller, then conclude.

  • Suggesting an artificial split of price to reduce SDLT.

    Students look for the largest saving.

    Fix: Only recommend genuine, commercially justified allocations. Warn of HMRC challenge and anti-avoidance risk.

Worked examples

Example 1

A company buys a non-residential warehouse for £600,000. Calculate the SDLT payable. Then calculate the stamp duty if it instead bought all shares in the company owning the warehouse for the same £600,000.

Show the solution
  1. SDLT on the first £150,000 at 0% = £0.
  2. SDLT on the next £100,000 (£150,001 to £250,000) at 2% = £2,000.
  3. SDLT on the remaining £350,000 (£600,000 − £250,000) at 5% = £17,500.
  4. Total SDLT = £0 + £2,000 + £17,500 = £19,500.
  5. Stamp duty on shares = £600,000 × 0.5% = £3,000.
  6. Difference = £19,500 − £3,000 = £16,500.

Answer: SDLT on the warehouse is £19,500. Stamp duty on the shares is £3,000. The share route saves £16,500 in stamp taxes, before considering other factors.

Example 2

A client plans to buy a non-residential unit for £240,000. She asks whether buying the owning company's shares for £240,000 would cost less in stamp taxes.

Show the solution
  1. SDLT on the first £150,000 at 0% = £0.
  2. SDLT on the remaining £90,000 (£240,000 − £150,000) at 2% = £1,800.
  3. Total SDLT = £1,800.
  4. Stamp duty on shares = £240,000 × 0.5% = £1,200.
  5. Difference = £1,800 − £1,200 = £600.
  6. The saving is small. Other factors, such as taking on the company's liabilities, may outweigh £600.

Answer: SDLT is £1,800 and stamp duty on shares is £1,200, a saving of £600. The saving is small, so you would only recommend the share route if the wider commercial and tax position supports it.

Exam tips

  • Copy the three SDLT bands and the 0.5% share rate from the tax tables at the start. Do not rely on memory.
  • Show every band as a separate line. Marks are awarded for method even if the arithmetic slips.
  • Always finish with a recommendation. Section A style requirements want advice, not only numbers.
  • Add a short comment on risk and commercial reality to earn professional skills marks.
  • Do not add the rates and allowances for years not in the tables. Use the figures given.

Practice questions from Legitimate tax planning measures

Stamp Taxes Planning: SDLT and Stamp Duty in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Stamp Taxes Planning: SDLT and Stamp Duty: frequently asked questions

What are the SDLT rates for non-residential property in ATX-UK?

The tax tables give 0% up to £150,000, 2% from £150,001 to £250,000 and 5% above £250,000. The rates apply slice by slice to the price.

What is the difference between stamp duty and SDLT?

SDLT is charged on land and buildings. Stamp duty is charged on transfers of shares at 0.5% of the consideration. They are separate taxes with different rates and structures.

How can you reduce SDLT on commercial property?

A common legitimate approach is to compare buying the property with buying the shares of a company that owns it, because share purchases bear 0.5% stamp duty. You must also weigh other taxes and commercial risks. Artificial arrangements are not acceptable.

Who pays stamp duty on shares?

The buyer normally pays it. In exam answers, calculate it as 0.5% of the price paid for the shares.