How Much Should I Invest for Retirement?
A generic rule like 'save 15%' can be useful as a starting point, but it does not know your age, current savings, desired retirement age or business cash flow. The contribution that matters is the one that closes the gap between your current path and the retirement outcome you want.
For self-employed people, that contribution also needs to be operationally realistic. A perfect target that causes cash shortages every slow month will not survive long enough to work.
Solve backward from the retirement target
Estimate the assets you may need, subtract current savings grown under reasonable assumptions, and solve for the recurring contribution needed over the remaining years. Use a range of return assumptions rather than one optimistic number.
Use a base contribution plus variable contributions
Choose a monthly amount that fits ordinary cash flow, then add quarterly or year-end contributions when profit is stronger. This method can be more durable than committing to a large fixed amount based on your best month.
Increase the contribution when the plan has less time
Starting later generally means the monthly contribution must be higher or the retirement date must move, because there is less time for contributions and compounding. The tradeoff should be visible so you can choose between saving more, retiring later or changing the spending target.
Review the contribution after major business changes
A new contract, debt payoff, business expansion or income decline can change the sustainable savings rate. Recalculate rather than leaving an old automatic contribution untouched for years.
Calculate My Retirement Number
Test a monthly contribution against your age, savings and retirement date.
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Frequently asked questions
Is 15% of income enough for retirement?
It may be enough for some people and insufficient for others. A target-based calculation is more useful because it accounts for age, current savings, retirement date and spending needs.
Should self-employed people save a fixed amount or percentage?
Many people benefit from a hybrid: a fixed baseline for consistency plus variable contributions tied to stronger cash-flow periods.
What if the required amount is too high?
Model the tradeoffs. A later retirement date, lower retirement spending target, higher current savings rate or combination may bring the plan into a realistic range.