Calculator accuracy
Methodology and assumptions
The formula, inputs, example, and limitations are shown so the result is checkable, not just a number in a box.
FormulaFuture balance = current savings x (1 + r)^n + monthly contribution x (((1 + r)^n - 1) / r)
Inputs usedSavings goal, Current savings, Monthly contribution, Annual return, Target months
LimitationsMoney results are planning estimates. Actual taxes, account terms, rates, fees, timing, local rules, and provider policies can change the real-world result.
Last reviewedJune 6, 2026
Cite this pageToolkit Shelf. Savings Goal Calculator. Last reviewed June 6, 2026. https://toolkitshelf.com/tools/savings-goal-calculator