Written Down Book Value and Tax Value

This article explains how to use the Written Down Book Value and Written Down Tax Value columns within the Fixed Assets spread sheet.

After claiming 50% of the value of the asset in one year the sum of any allowance made in future years should only ever add up to the other 50%.

This is achieved by populating the remaining unclaimed value in column O.

As the asset is unlikely to depreciate by 50% the book value get's out of sync with the tax value.

Example: Asset originally purchased for £1000 Total allowance claimed so far £500 Actual depreciation £100

  • Written Down Book Value: £900 (£1000-£100)
  • Written Down Tax Value: £500


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