Martin Lewis has shared the pension “rule of thumb” when it comes to saving for your retirement. During a pension special of The Martin Lewis Money Show on Tuesday (5 May), the financial guru took a question from a viewer called Daryl, who asked what a person should be paying into their pension. He said: “Let me give you the rule of thumb that scares the pants of everybody. Take the age when you start putting into your pension, so in your case 30, halve it, that’s 15 ,and that's how much of your income you want going in for the rest of your life for a decent retirement He added: “The earlier you start, the better retirement you are going to have.”