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As a solicitor or conveyancer, use this calculator to help work out the tax due on transactions if claiming multiple dwellings relief (MDR).

The relief can be claimed where a taxpayer buys more than one dwelling in Wales (multiple dwellings) from the same seller either:

  • in a single transaction with the same effective date
  • in a number of linked transactions

You’ll need to know:

  • if main rates or higher rates of the tax apply
  • the total purchase price for all dwellings
  • the number of dwellings involved
  • the total purchase price for all other land

If you previously used our MDR spreadsheet calculator, contact us instead.

Welsh Revenue Authority online service

For more complex cases including linked transactions, or if you're uncertain how the tax or relief applies:

Using browsers for Welsh Revenue Authority online services