HomeKnowledge resourceCalculatorsMillionaire Millionaire When will you become a millionaire?Calculate how long it will take you Starting balance (£): * Monthly deposit (£): * * Average rate of return on investment (%): * Average annual inflation rate (%): Final amount desired (£): Invest at rate of return of (%): * Our calculator currently shows no return on capital after taking inflation into account. With the current levels of return from deposit accounts and the (relatively) high level of inflation your capital could actually be eroding. However, you may wish to enter your own rates of return and your longer term view of inflation. Similarly the £1 million is our default wealth target, do change to whatever final target you prefer.