Interested in free money to put towards your retirement savings? Read this now. : Did you know that if you make a contribution into a Self-Invested Personal Pension (SIPP) retirement account, the government will add in some extra money for you too? It’s called ‘tax relief’ and it’s an extremely generous tax break. A lot of people are completely unaware of this amazing tax break. In fact, according to online investment broker Hargreaves Lansdown, around half of Britons have absolutely no idea the government is willing to top up their pension if they make a contribution.