Martin Lewis has given a warning to anyone gifting money to a relative and explained the ‘£3,000 rule’. Appearing on his BBC Podcast, the personal finance expert was discussing inheritance tax. Many relatives, when they’re a bit older and perhaps have more spare cash, like to help out their children or grandchildren with the costs of modern life. However, this could be included in inheritance tax calculations, Martin and two experts have revealed - and explained why people need to keep records.