Start with the goal
Choose a target and horizon together. The calculator reports the gap, estimated target month, and required starting monthly deposit when the current plan falls short.
Savings goal planner
Build a deposit schedule and account for the drag around the rate
Combine an opening deposit, monthly and annual additions, growing contributions, compounding, taxes on interest, account fees, inflation, and a target in one detailed ledger.
Plan with context
A savings goal needs both an amount and a deposit system.
This planner connects the advertised rate to the cash you add, the timing of each deposit, account drag, purchasing power, and the monthly contribution required to reach a target.
Deposit timing matters
Beginning-of-month deposits receive one additional month of modeled interest. Over a long horizon, repeated timing differences accumulate.
Grow contributions gradually
Separate annual increase assumptions can be applied to monthly deposits and additional annual deposits, helping the plan reflect expected income growth.
Nominal rate versus APY
The calculator treats the entered rate as nominal and derives a monthly equivalent from the selected compounding frequency. A bank may advertise APY instead.
Taxes and fees create drag
Taxes on positive interest and monthly account fees reduce both current savings and future interest. The no-drag comparison measures their broader modeled impact.
Protect purchasing power
The real-value column translates future balances into today’s dollars using the entered inflation rate. Inflation and savings rates will not remain constant in practice.
Included
Opening balance, monthly and annual deposits, contribution growth, five compounding frequencies, deposit timing, tax, fees, inflation, goal math, and monthly or annual ledgers.
Not included
Variable bank rates, tiered balances, withdrawal penalties, insurance limits, jurisdiction-specific tax treatment, withdrawals, or institution-specific daily balance methods.
Use it well
Confirm whether the quoted rate is nominal or APY, compare account fees, and keep emergency savings accessible even when a higher-yield product has lockups or penalties.