MDR is calculated using residential LBTT rates and bands, in line with LBTT(S) A 2013 schedule 5 part 4


Overview of MDR Calculations

MDR is calculated by considering the tax attributable to each dwelling rather than treating the transaction as a single purchase. The calculation can reduce the tax due on the dwelling element of the transaction, but it does not reduce any ADS liability and cannot reduce the overall liability below the minimum prescribed amount.

There are two possible calculation approaches depending on whether ADS (Additional Dwelling Supplement) applies.

Where ADS applies, DT becomes ΣDT (the sum of the tax due in relation to each dwelling). ADS must be included in the calculation for any dwelling to which ADS applies. The amount payable is then calculated by comparing (ΣDT + RT) with (MPA + RT). MDR does not reduce the ADS amount.

The MDR calculation may reduce the tax attributable to the dwelling element to nil or a very low amount; however, the final liability cannot be reduced below the minimum prescribed amount.

Key terminology

  • Total consideration: Total price paid for transaction
  • Dwellings: Residential properties in the purchase
  • Remaining property: Any non-residential part (e.g. shop, land)
  • ND: Number of dwellings
  • DT: tax on one “average” dwelling
  • RT: Tax on any non-residential part
  • ∑: sum of (total) for tax due when the ADS applies
  • TT: Total tax without MDR
  • MPA: Minimum tax rule 

Formulas used for calculating the MDR

Multiple Dwellings Relief calculation - no ADS payable

(DT x ND) + RT

  • DT = tax due on one dwelling (based on the average consideration)
  • ND = number of dwellings
  • RT = tax due on any remaining (non-residential or mixed) property

Multiple Dwellings Relief calculation – with ADS payable

ΣDT + RT

  • ΣDT = total tax due across all dwellings
    • This may differ per dwelling (e.g. where replacement of a main residence applies)
  • RT = tax due on remaining property

MPA - Minimum prescribed amount

A minimum tax threshold applies.

MPA = 25% x (TT – RT) 

(i.e. 25% of the tax attributable to the dwellings)

  • TT = total LBTT if MDR had not been claimed
  • RT = tax due on remaining property

The minimum prescribed amount is provided for in The Land and Buildings Transaction Tax (Prescribed Proportions) (Scotland) Order 2014

Calculating remaining property tax (RT)

To calculate RT:

  1. Calculate TT (total tax without MDR)
  2. Determine the proportion of consideration attributable to remaining property:

Remaining consideration ÷ Total consideration

  1. Multiply this proportion by TT:

RT = TT x proportion

Final tax payable

The amount of tax payable = the higher of:

  • (DT x ND) + RT (where ADS applies this becomes ΣDT + RT)

or

  • MPA + RT

MDR relief amount

MDR Relief = TT – Final LBTT payable


Step-by-step guidance

Calculating DT (tax due in relation to a dwelling)

  1. Determine the total consideration attributable to dwellings (on a just and reasonable basis), including consideration from linked transactions where applicable.
  2. Divide this amount by the total number of dwellings to obtain the average consideration per dwelling.
  3. Calculate LBTT on that average amount using residential rates and bands, treating it as a standalone (non-linked) transaction.
  4. The result is DT.
  5. Multiply DT by the number of dwellings (ND) to calculate the tax attributable to the dwelling element of the transaction.

Note: Where ADS applies, ensure any relevant relief (e.g. 6+ dwellings treatment) is reflected.

If the ADS applies 

  • MDR can still be claimed where ADS applies.
  • If 6 or more dwellings are purchased in a single transaction and treated as non-residential, ADS does not apply.
  • Where ADS applies to all dwellings, DT becomes ∑DT (sum of the tax due for each dwelling).

Calculating ∑DT

  1. Calculate the average consideration per dwelling (as for DT).
  2. Calculate LBTT on the average consideration using residential rates.
  3. Add ADS to each applicable dwelling calculation.
  4. Add together the tax due for all dwellings.

The result is ∑DT.

Note: If ADS applies to some dwellings but not others (for example, where a dwelling is a replacement main residence), calculate the tax due for each dwelling separately using the average consideration. Apply ADS only to the dwellings for which it is due and total the results to arrive at ∑DT.

Calculating TT (Total Tax)

TT is the total tax that would be due if MDR were not claimed.

  • Calculate LBTT on the total consideration using the appropriate rates and bands.
  • Where 6 or more dwellings are treated as non-residential, use non-residential rates.

Calculating RT (Tax Due on Remaining Property)

  1. Calculate the tax due on the transaction before MDR.
  2. Divide the consideration attributable to remaining property by the total chargeable consideration.
  3. Multiply the result from step 1 by the proportion calculated in step 2.

The result is RT.

Calculating MPA (Minimum prescribed amount)

  1. Calculate TT (the total tax due without MDR).
  2. Calculate RT (the tax attributable to any remaining property).
  3. Subtract RT from TT: TT − RT
  4. Multiply the result by 25%: MPA = 25% × (TT − RT)

The result is MPA.

Note: Where there is no remaining property, RT will be nil and the calculation becomes:

MPA = 25% × TT

Determining the final LBTT payable 

Once the MDR calculation and the MPA calculation have been completed:

  1. Calculate the MDR amount: 
    • (DT × ND) + RT, or
    • ΣDT + RT where ADS applies.
  2. Calculate MPA + RT.
  3. Compare the two results.
  4. The final LBTT payable is the higher amount.

This ensures that the tax payable is not reduced below the minimum prescribed amount.

Calculating MDR relief

  1. Calculate TT (the total tax due without MDR).
  2. Calculate the Final LBTT Payable.
  3. Subtract the Final LBTT Payable from TT: MDR Relief = TT − Final LBTT Payable

The result is the amount of MDR obtained.

Checking whether MDR is beneficial

  1. Calculate TT (LBTT without MDR).
  2. Calculate the Final LBTT Payable using the MDR rules.
  3. Compare the two amounts.

If:

Final LBTT Payable is less than TT

MDR provides a tax saving.

If:

Final LBTT Payable is equal to or greater than TT

MDR does not provide a tax advantage.

Note: The amount of MDR available is affected by the minimum prescribed amount. In some cases, the MPA may significantly reduce the tax saving that would otherwise arise from MDR.

Key definitions

  • Attributable consideration: must be apportioned on a just and reasonable basis
  • Linked transaction: treated collectively when determining total consideration

Important notes

  • MDR is optional – it is not always beneficial
  • MDR may reduce the calculated tax to nil; however, the final liability will be subject to the minimum prescribed amount, which sets a lower limit
  • Retain evidence and workings supporting the MDR calculation, as Revenue Scotland may request these
  • Taxpayers should compare:
    • LBTT with MDR
    • LBTT without MDR

The LBTT Calculator can help with each step.


Examples

MDR + ADS (All dwellings)

A relevant transaction takes place which includes four dwellings. The ADS is due on all dwellings. The total consideration is £1,200,000.

Step Process Calculation
1 Calculate the average consideration per dwelling £1,200,000 ÷ 4 = £300,000
2

Calculate tax per dwelling (DT)

Where ADS applies, DT becomes ∑DT

Using residential LBTT rates:

  • £0 - £145,000 at 0% = £0
  • £145,001 - £250,000 (£105,000 at 2%) = £2,100
  • £250,001 - £300,000 (£50,000 at 5%) = £2,500

ADS: £300,000 at 8% = £24,000

ΣDT = £28,600

3 Multiply by number of dwellings (ΣDT x ND)

£28,600 x 4 = £114,800

ΣDT x ND = £114,800

4

Apply minimum prescribed amount:

Calculate LBTT without MDR (TT)

Using residential LBTT rates:

  • £0 - £145,000 = £0
  • £145,001 - £250,000 (£105,000 at 2%) = £2,100
  • £250,001 - £325,000 (£75,000 at 5%) = £3,750
  • £325,001 - £750,000 (£425,000 at 10%) = £42,500
  • Above £750,001 (£450,000 at 12%) = £54,000

ADS £1,200,000 at 8% = £96,000

TT = £198,350

5

Calculate minimum prescribed amount

MPA = 25% x TT

£198,350 @ 25% = £49,587.50

MPA = £49,587.50

6 Compare the ΣDT x ND with MPA amounts and the higher figure is the one to use in the calculation of the final tax figure

ΣDT X ND = £114,400

MPA = £49,587.50

Final LBTT = £114,400

7

Calculate the MDR

MDR = TT – Final LBTT payable

£198,350 - £114,400 = £83,950

MDR = £83,950 (to be claimed in the LBTT return)

MDR + ADS: four dwellings, with one being replacement PMR

A relevant transaction takes place which includes 4 dwellings. The ADS is due on only three dwellings, with the remaining dwelling being a replacement of a main residence. 

The total consideration is £1,200,000 and the main residence is valued at £650,000.

Step Process Calculation
1 Calculate the average consideration per dwelling £1,200,000 ÷  4 = £300,000
2

Calculate tax per dwelling (DT)

Where ADS applies DT becomes ∑DT

Using residential LBTT rates:

  • £0 - £145,000 at 0% = £0
  • £145,001 - £250,000 (£105,000 at 2%) = £2,100
  • £250,001 - £300,000 (£50,000 at 5%) = £2,500

For the replacement PMR the LBTT is £4,600

For the additional three dwellings ADS applies:

ADS £300,000 at 8% = £24,000 (plus the LBTT of £4,600 = £28,600)

 ΣDT = £4,600 + £28,600 + £28,600 + £28,600 

3 Step 3 multiply by number of dwellings (ΣDT x ND)

£4,600 + £28,600 + £28,600 + £28,600 = £90,400

ΣDT x ND = £90,400

4

Apply minimum prescribed amount -

Calculate LBTT without MDR (TT)

Using residential LBTT rates:

  • £0 - £145,000 = £0
  • £145,001 - £250,000 (£105,000 at 2%) = £2,100
  • £250,001 - £325,000 (£75,000 at 5%) = £3,750
  • £325,001 - £750,000 (£425,000 at10%) = £42,500
  • Above £750,001 (£450,000 at 12%) = £54,000

ADS on £550,000 at 8% = £44,000

TT = £146,350

5

Calculate minimum prescribed amount

MPA = 25% x TT

£146,350 at 25% = £36,587.50

MPA = £36,587.50

6 Compare the ΣDT x ND with MPA amounts and the higher figure is the one to use in the calculation of the final tax figure

ΣDT X ND = £90,400

MPA = £36,587.50

 

Final LBTT = £90,400

7

Calculate the MDR

MDR = TT – Final LBTT payable

£146,350 - £90,400 = £83,950

MDR = £55,950 (to be claimed in the LBTT return)

MDR + ADS: Two dwellings, with one being replacement PMR

Green buys a house with a separate cottage in the grounds in one transaction. The total cost is £935,000.

The cottage is valued at £225,000 on a just and reasonable apportionment.  The ADS is due only on the cottage as the house is a replacement main residence, the previous main residence has already been sold.

Step Process Calculation
1 Calculate the average consideration per dwelling £935,000 ÷ 2 = £467,500
2

Calculate tax per dwelling (DT)

Where ADS applies DT becomes ∑DT

Using residential LBTT rates:

  • £0 - £145,000 at 0% = £0
  • £145,001 - £250,000 (£105,000 at 2%) = £2,100
  • £250,001 - £300,000 (£75,000 at 5%) = £3,750
  • £325,001 - £750,000 (£142,500 at 10%) = £14,250

For the replacement PMR the LBTT is £20,100

For the additional dwelling ADS applies:

ADS £467,500 at 8% = £37,400 (plus the LBTT of £20,100 = £57,500)

ΣDT = £20,100 + £57,500  

3 Multiply by number of dwellings (ΣDT x ND)

£20,100 + £57,500

ΣDT x ND = £77,600

4

Apply minimum prescribed amount -

Calculate LBTT without MDR (TT)

Using residential LBTT rates:

  • £0 - £145,000 = £0
  • £145,001 - £250,000 (£105,000 at 2%) = £2,100
  • £250,001 - £325,000 (£75,000 at 5%) = £3,750
  • £325,001 - £750,000 (£425,000 at 10%) = £42,500
  • Above £750,001 (£185,000 at 12%) = £22,200

ADS on £225,000 at 8% = £18,000

TT = £88,550

5

Calculate minimum prescribed amount

MPA = 25% x TT

£88,550 at 25% = £22,137.50

MPA = £22,137.50

6 Compare the ΣDT x ND with MPA amounts and the higher figure is the one to use in the calculation of the final tax figure

ΣDT X ND = £77,600

MPA = £22,137.50

Final LBTT = £77,600

7

Calculate the MDR

MDR = TT – Final LBTT payable

£88,550 - £77,600 = £10,950

MDR = £10,950 (to be claimed in the LBTT return)

MDR + ADS (6+ dwellings and commercial element)

Green Ltd acquires 8 flats with 2 ground floor shop units for £1,250,000. The chargeable consideration attributable to the shops is apportioned on a just and reasonable basis to be £250,000.

As this transaction involves the acquisition of six or more dwellings, relief for purchases of six or more dwellings will be available therefore Additional Dwelling Supplement (ADS) will not be included in any part of this calculation if the relief is claimed.

Step Process Calculation
1 Calculate the average consideration per dwelling £1,000,000 ÷ 6 = £166,666
2

Calculate tax per dwelling (DT)

 

 

Using residential LBTT rates:

£0 - £145,000 at 0% = £0

£145,001 - £250,000 (£21,666 at 2%) = £433

DT = £433 

3 Multiply by number of dwellings (DT x ND)

£433 x 6

DT x ND = £2,598

4

Apply minimum prescribed amount -

Calculate LBTT without MDR (TT)

Using non-residential LBTT rates:

  • £0 - £150,000 = £0
  • £150,001 - £250,000 (£100,000 at 1%) = £1,000
  • Above £250,001 (£1,000,000 at 5%) = £50,000

TT = £51,000

5

Calculate tax due on remaining property (RT)

 

£250,000 / £1,250,000 = 0.20

£51,000 x 0.20 = £10,200

RT = £10,200

6

Calculate minimum prescribed amount

MPA = TT – RT x 25%  

£51,000- £10,200 = £40,800

£40,800 at 25 % = £10,200

 

MPA = £10,200

7 Compare the DT x ND + RT with MPA + RT and the higher figure is the one to use in the calculation of the final tax figure

DT X ND + RT = £2,598 + £10,200 = £12,798

MPA = £10,200 + £10,200 = £20,400

Final LBTT = £20,400

8

Calculate the MDR

MDR = TT – Final LBTT payable

£51,000 - £20,400 = £30,600

MDR = £30,600 (to be claimed in the LBTT return)

MDR not beneficial (mix of dwellings and commercial property)

Green Ltd acquires 2 flats with 2 ground floor shop units for £1,250,000. The chargeable consideration attributable to the shops is apportioned on a just and reasonable basis to be £250,000.

Step Process Calculation
1 Calculate the average consideration per dwelling £1,000,000 ÷ 2 = £500,000
2

Calculate tax per dwelling (DT)

Where ADS applies DT becomes ∑DT

 

 

Using residential LBTT rates:

  • £0 - £145,000 at 0% = £0
  • £145,001 - £250,000 (£105,000 at 2%) = £2,100
  • £250,001 - £325,000 (75,000 at 5%) = £3,750
  • £325,001 - £750,000 (175,000 at 10%) = £17,500

ADS £500,000 at 8% = £40,000

ΣDT = £23,350 + £40,000 = £63,350

3 Multiply by number of dwellings (ΣDT x ND)

£63,350 x 2

ΣDT x ND = £126,700

4

Apply minimum prescribed amount -

Calculate LBTT without MDR (TT)

As this is a mixed transaction we apply non-residential LBTT rates

Using non-residential LBTT rates:

  • £0 - £150,000 = £0
  • £150,001 - £250,000 (£100,000 at 1%) = £1,000
  • Above £250,001 (£1,000,000 at 5%) = £50,000

ADS £1,000,000 at 8% = £80,000

TT = £131,000

5

Calculate tax due on remaining property (RT)

 

£250,000 / £1,250,000 = 0.20

£131,000 x 0.20 = £26,200

RT = £26,200

6

Calculate minimum prescribed amount

MPA = TT – RT x 25%  

£131,000 - £26,200 = £104,800

£104,800 at 25 % = £26,200

MPA = £26,200

7 Compare the ΣDT x ND + RT with MPA + RT and the higher figure is the one to use in the calculation of the final tax figure

ΣDT x ND + RT = £126,700 + £26,200 = £152,900

MPA + RT = £26,200 + £26,200 = £52,400

Final LBTT = £152,900

8

Calculate the MDR

MDR = TT – Final LBTT payable

£131,000 - £152,900 = -£21,900

MDR = -£21,900 

MDR (6+ dwellings – fully residential transaction)

Blue purchases 6 residential properties in a single transaction with a total cost of £900,000.

Blue can choose to either:

  • claim MDR or
  • treat the transaction as non-residential and apply non-residential rates

It would be worthwhile carrying out both calculations to assist with your decision on how to include this in the LBTT return.

Option 1 – MDR Calculation

Step Process Calculation
1 Calculate the average consideration per dwelling £900,000 ÷ 6 = £150,000
2 Calculate tax per dwelling (DT)

Using residential LBTT rates:

  • £0 - £145,000 at 0% = £0
  • £145,001 - £150,000 (£5,000 at 2%) = £100

DT = £100

3 Multiply by number of dwellings (DT x ND)

£100 x 6 = £600

DT x ND = £600

4

Apply minimum prescribed amount -

Calculate LBTT without MDR (TT)

£0 - £150,000 = £0

£150,001 - £250,000 at 1%  = £1,000

£250,001 - £900,000 at 5%  = £32,500

TT = £33,500

5

Calculate minimum prescribed amount

MPA = 25% x TT

25% x £33,500 = £8,375

MPA = £8,375

6 Compare the DT x ND with MPA amounts and the higher figure is the one to use in the calculation of the final tax figure

DT X ND = £600

MPA = £8,375

Final LBTT = £8,375

7

Calculate MDR

MDR = TT – Final LBTT payable

£33,500 - £8,375 = £25,125

MDR = £25,125 (to be included in LBTT return)

Option 2 – Non-residential rates

Step Process Calculation
1 Calculate the tax due using non-residential rates

£0 - £150,000 = £0

£150,001 - £250,000 at 1% = £1,000

£250,001 - £900,000 at 5% = £32,500

LBTT due = £33,500

In this scenario, claiming MDR relief would be more beneficial for the buyer, as it results in a final tax liability of £8,375. In contrast, applying the non-residential rates without claiming MDR would result in a higher tax liability of £33,500.