Savings Goal Calculator
Savings Goal$
Current Savings$
Time Horizonyrs
Expected Return%
Inflation Rate%
Required Monthly
$520
Inflation-Adjusted Goal
$100,000
Total Contributions
$67,364
Interest Earned
$32,636
Path to Goal
Balance Goal
Projected BalanceGoal
Drag to zoom. Double-click to reset.
What-If Scenarios
| Monthly | Final Value | vs Goal |
|---|---|---|
| $260/mo | $55,050 | $-44,950 |
| $390/mo | $77,551 | $-22,449 |
| $520/moexact | $100,052 | +$52 |
| $650/mo | $122,553 | +$22,553 |
| $780/mo | $145,054 | +$45,054 |
| $1,039/mo | $189,883 | +$89,883 |
Methodology
Inflation-adjusted goal
G′ = G × (1 + i)n
where G = nominal goal, i = annual inflation rate, n = years
Required monthly payment (PMT)
PMT = (G′ − PV × (1 + r)t) × r / ((1 + r)t − 1)
where PV = current savings, r = monthly rate, t = total months
Years needed (inverse)
Iterative: find smallest t where FV(PV, PMT, r, t) ≥ G × (1 + i)t/12
Solved month-by-month since inflation compounds on the moving target