FIRE With Kids Calculator
Family-friendly financial independence · Updated 2026
FIRE With Children
Kids change the FIRE equation significantly. The USDA 2023 estimate is ~$310,000 per child from birth to age 17 (not including college, inflation-adjusted). At a 4% withdrawal rate, each child adds approximately $450,000 to your base FIRE number for ongoing expenses — plus any college savings goals.
This calculator uses a phased approach: early years (0-5) cost more due to daycare, middle years (6-17) are baseline, and college years (18-22) spike with tuition. Budget $18,000-22,000 per child per year as a starting estimate (USDA middle-income 2023 figures).
| Annual Cost/Child | FIRE Number Impact | Monthly Budget |
|---|---|---|
| $8,000 (frugal) | +$200,000 | +$667/mo |
| $12,000 (average) | +$300,000 | +$1,000/mo |
| $18,000 (HCOL area) | +$450,000 | +$1,500/mo |
Frequently Asked Questions
How is fire with kids calculator calculated?
The formula is: (Base + Child×Kids) ÷ Withdrawal Rate. Enter your values above and click Calculate to see your personalized result instantly. Kids add significant costs to a FIRE plan. At $18,000 per child per year, two children add $900,000 to your FIRE number at a 4% withdrawal rate. This calculator helps parents plan realistically by…
What inputs do I need for the fire with kids calculator?
You need: Base Expenses, Child Cost, Num Children, Early Years, Middle Years, College Years, Withdrawal Rate. Default values are pre-filled — adjust them to match your personal finances for a customized result.
Is the fire with kids calculator free to use?
Yes — all TorchFI calculators are completely free. No registration, no email required. Calculations run entirely in your browser for maximum privacy. We never see or store your financial data.
How does the fire with kids calculator help with FIRE planning?
Adjust your FIRE number to account for the cost of raising children. Factor in per-child expenses and the years they'll be financially dependent. This calculator helps you make data-driven decisions about your financial independence journey instead of relying on guesswork.