Retirement Planning Basics: How Much Do You Need?

“How much do I need to retire?” has no single answer, but you can build a sensible estimate in four steps. The goal is not perfection; it is to know whether you are roughly on track and what to change if you are not.

Step 1: Decide what you will spend

Start with your current monthly spending and adjust. Work costs such as commuting usually fall in retirement, while healthcare and leisure may rise. Many planners aim for 70% to 80% of pre-retirement income, but your own budget is a better guide. Express the figure in today’s money.

Step 2: Subtract guaranteed income

Pensions, government benefits and annuities reduce what your savings must provide. If you need 4,000 a month and expect 1,500 from benefits, your savings must produce 2,500.

Step 3: Use the 4% guideline as a first check

The 4% rule says you can withdraw about 4% of your portfolio in the first year, then adjust for inflation, with a good chance of lasting around 30 years. Flip it around: multiply your yearly need by 25. For 30,000 a year (2,500 a month), the target is 750,000. It is a rule of thumb, not a guarantee. People retiring early may want a lower rate such as 3.5%.

Step 4: Check your trajectory

Enter your age, savings, monthly contributions and expected returns into the retirement calculator. It grows your savings to retirement, converts your desired income to future money using inflation, and shows any surplus or shortfall, plus the extra monthly saving to close it.

Inflation matters more than you think

At 2.5% inflation, prices double roughly every 28 years. A comfortable 4,000 a month today could mean nearly 9,500 a month in 35 years. This is why our tool works in future money, and why the inflation calculator is a useful companion.

Ways to close a gap

A note on risk

Markets move up and down, and bad returns early in retirement hurt the most. Keep a cash buffer for a few years of spending, diversify, and review your plan every year. For personal advice, speak with a qualified financial planner.