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New FIRE tool

FIRE savings rate: how much should you save monthly?

Adjust income, lifestyle and a safety buffer to compute the monthly savings required to reach financial independence at your chosen age.

The analysis accounts for inflation, taxes, and iterative savings calculations.

FIRE plan parameters

Use the sliders to reflect Polish income and cost-of-living realities.

Your age35
Age when you reach FIRE50
Net monthly incomePLN 8,000
Current investment capitalPLN 200,000
Lifestyle and expensesStandard FIRE
Lean FIREStandard FIREFat FIRE

Estimated spend: PLN 4,800 / mo · FIRE annual spend: PLN 57,600

Expense safety buffer1.20x

The buffer raises your FIRE target to cover lifestyle inflation and unexpected costs.

Result: required savings rate

Inflation, taxes, and iterative calculations drive the required savings estimate.

Needed monthly savings

PLN 7,693

Required savings rate

96.2%

Left after expenses

PLN 3,200

Safety buffer

Your 1.20x buffer sets the FIRE target capital at PLN 2,133,333.

Time horizon

15 years remain until the goal. The solver converged in 50 iterations.

Success probability

98.0%

Estimated for the current plan inputs.

Tips from the FIRE guide

Key lessons from our savings-rate chapter in the Dywidenciarz guide.

A 50% savings rate cuts the FIRE path dramatically

At 5% savings you need ~66 years; at 50% only 17 years—an entire generation of difference.

Grow income and trim costs deliberately

Raise your savings rate via career moves, side income, expense optimisation, and budgeting.

Ambitious target: invest 50–70% of income

Saving 50–70% of earnings keeps the momentum toward financial independence.