IHT Tax Update: The £1m Business Relief Cap is Now Transferable
There’s finally some good news for business owners and farmers following Budget 2025. The new £1 million cap on 100% business property relief (BPR) and agricultural property relief (APR) for inheritance tax (IHT) is now transferable between spouses and civil partners.
From 6 April 2026, the 100% IHT relief for business and agricultural property is capped at £1 million per person. Originally, if you didn’t use your £1 million allowance on the first death, for example, because everything passed to your spouse, it would have been lost.
That could have meant a significantly higher IHT bill on the second death. In some cases, families were looking at up to £200,000 more in tax simply because the allowance wasn’t transferable.
Now, any unused £1 million allowance can be transferred to a surviving spouse or civil partner. That brings it in line with the normal IHT nil rate band rules, which already allow allowances to pass between spouses. In practical terms, this means a married couple could potentially benefit from a combined £2 million cap on 100% relief.
So, now you can leave everything to your spouse without losing the allowance. This means that there is no longer a need to split up your business just to protect the full £2 million of IHT relief. The transferability change makes estate planning far more straightforward and removes a major concern for family businesses!
Give Rustrick Accountants a call on 01622 738165 today if you want to discuss things further or want to see what would be best for you and your business










