How to work out your loss
Calculating your EIS loss is straightforward. The 'net cost' of your investment is calculated as the amount you invested minus any income tax relief claimed or previously claimed. Take what you originally invested, subtract any money you got back, then deduct the initial income tax relief you received.
For example, if you invested £10,000 and claimed £3,000 in initial relief (30%), your effective cost (net cost) is £7,000 (invested minus income tax relief claimed).
If the company fails and your shares become worthless, your allowable loss is £7,000. In this situation, you can make a negligible value claim or nil value claim to HMRC to treat the shares as disposed of at nil value and claim loss relief accordingly.
The same principle applies to partial losses. If you sell shares for less than you paid, the difference (minus your initial relief) becomes your loss figure. How much loss relief you can claim depends on the rate of income tax or capital gains tax rate and your marginal rate. The relief amount is determined by multiplying your effective loss by your applicable marginal rate.
Keep good records of purchase dates, amounts, the original investment date, any disposal proceeds, and the market value at relevant points. You’ll need these when claiming.
Claiming against income tax
For most people, especially higher-rate taxpayers, claiming against income tax offers the biggest benefit.
You must have sufficient taxable income to offset the loss, and the relief can be applied to taxable income in the relevant tax year or the same tax year as the loss. You can offset your losses against your income tax bill for either the year of the loss or the previous tax year.
This flexibility is brilliant if your income varies year to year. If you have too much income tax paid, you may be eligible for a refund. You can choose whichever tax year gives you the best result.
To claim, you’ll need to complete the SA108 Capital Gains Tax pages in your Self Assessment. There’s a section specifically for “Unlisted shares and securities.” Make sure to fill out the self assessment form and provide your bank account details to receive any repayment.
There are limits – you can claim relief on losses up to £50,000 or 25% of your adjusted total income, whichever is higher. But for most investors, that’s plenty of headroom. Note that any loss relief claimed must be accurately reported to HMRC.
Claiming against capital gains
If claiming against income tax isn’t your best option, you can offset your EIS losses against capital gains, specifically 'chargeable gains', instead. This route has no annual limit.
You can use the loss against chargeable gains in the current tax year or carry it forward to offset gains in future tax years until you’ve used it up. This is particularly handy if you’ve exceeded the income tax relief limits.
To claim against capital gains, complete the capital gains pages of your Self Assessment. The process is similar to claiming against income, but the calculations differ.
This option works well if you’ve made significant chargeable gains in the year or expect to in future tax years.