Martin Lewis has revealed an easy trick to know exactly how much money you should be putting into your pension pot each year.

The finance expert shared his 'rule of thumb' on what percentage of your salary to put away on last night's episode of ITV's The Martin Lewis Money Show Live.

The Money Saving Expert's method involves taking the age you started paying into your pension, halving it, and paying that percentage of your salary into your pension. So if you started paying into your pension at 30, you should halve that number, and pay 15 per cent of your annual salary. Meanwhile, f you started saving at 40, then expect to pay 20 per cent a year to ensure a decent retirement sum.