VAT Partial Exemption: How to Calculate Your Recoverable Input Tax

Who Does Partial Exemption Affect?

Partial exemption applies to VAT-registered businesses that make both taxable supplies (standard, reduced, or zero-rated) and exempt supplies (such as financial services, insurance, education, or residential property lettings). If that describes your limited company, you cannot reclaim input VAT in full — instead, you must apportion it using HMRC's partial exemption rules.

Step 1: Separate Your Input Tax Into Three Buckets

Before you calculate anything, sort every item of input VAT you've incurred in the VAT period into one of three categories:

• Directly attributable to taxable supplies — fully recoverable. For example, software used solely to deliver VAT-able consultancy work.
• Directly attributable to exempt supplies — not recoverable. For example, professional fees relating purely to an exempt property rental income stream.
• Residual (overhead) input tax — used for both, or not directly attributable to either. This is the portion you must apportion.

Accurate cost allocation at this stage saves time and reduces errors downstream. Keep clear records showing how you've attributed each cost.

Step 2: Apply the Standard Method to Residual Input Tax

Unless HMRC has agreed a special method with you, you must use the standard method to calculate how much residual input tax you can recover. The formula is:

Recoverable % = (Value of taxable supplies ÷ Total value of all supplies) × 100

Use the VAT-exclusive values of your supplies for this calculation. The resulting percentage is rounded up to the nearest whole number. You then apply this percentage to your residual input tax to find the recoverable amount.

Example: Your company has £180,000 of taxable supplies and £60,000 of exempt supplies in the period. Your recovery percentage is (180,000 ÷ 240,000) × 100 = 75%. If your residual input VAT is £8,000, you can recover £6,000.

Step 3: Check the De Minimis Limits

Even if some input tax relates to exempt supplies, you may be able to recover it all if your exempt input tax is de minimis. You pass the de minimis test if the exempt input tax is:

• No more than £625 per month on average (£1,875 per quarter, £7,500 per year), AND
• No more than 50% of your total input tax in the period.

Both conditions must be met. If you pass, treat all input tax as fully recoverable for that period. This is a valuable relief for businesses with a small exempt income stream, so always check it before writing off any VAT.

Step 4: Carry Out the Annual Adjustment

The standard method requires an annual adjustment at the end of each tax year. Throughout the year you use provisional recovery percentages based on each period's figures, but your actual recovery must be recalculated using the full year's supply values. Any over- or under-recovery is corrected on the VAT return for the period in which your tax year ends.

Your partial exemption tax year usually follows your VAT return periods, ending on 31 March, 30 April, or 31 May depending on your VAT stagger group.

When to Consider a Special Method

The standard method doesn't always produce a fair result — particularly if turnover isn't a good proxy for actual use of costs. You can apply to HMRC for a special method using a different measure, such as floor area, headcount, or transaction numbers. HMRC must approve any special method before you use it, so apply in writing with a clear explanation of why the standard method produces a distorted outcome.

Keep Your Records Watertight

HMRC can and does challenge partial exemption calculations during VAT inspections. Make sure you retain evidence of how you've attributed costs, the supply values used in your calculations, and the outcome of each annual adjustment. Good record-keeping is your strongest defence if your methodology is ever questioned.