Pension vs. Lump Sum Calculator
Compare a monthly pension against taking a lump sum you invest yourself.
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Wealth & business
Retirement · Pension & Social Security
See how much extra you would need to save to replace some or all of your Social Security.
See what Social Security is worth to you — results update as you type.
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Estimates only — not a loan offer or financial advice.
Put this calculator on your websiteWhat this calculator does
The How Important Is Social Security? is a free, embeddable calculator from CalcFunnel. See how much extra you would need to save to replace some or all of your Social Security.
You enter 4 inputs: monthly social security, benefit reduction (%), years in retirement and investment return (%).
It returns extra savings needed, monthly benefit at risk, annual benefit at risk, total benefit over retirement and years.
Built for financial advisors and planners. Embedding it on your own website needs the Business plan (from $210/month, with a 14-day free trial), which unlocks the Retirement category.
The first figure — extra savings needed — is the headline result.
Inputs
Each field below comes straight from the calculator, with the same help text visitors see when they hover the info icon.
FAQ
Still stuck? Ask the team — we reply within one business day.
Compare a monthly pension against taking a lump sum you invest yourself.
See how raising your pre-tax retirement contribution changes your take-home pay.
Estimate your monthly Social Security benefit from your average indexed monthly earnings and the age you claim.
Project your workplace retirement plan balance with contributions and employer match.
Project a 403(b) plan for teachers and nonprofit employees, with employer match and the optional 15-year service catch-up.
Project a governmental 457(b) deferred-compensation plan, with the optional special "final 3 years" catch-up.
The How Important Is Social Security? is one of 188 calculators you can brand and embed with one line of code.
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Estimates only — not a loan offer.
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