The concept
Turning a future target into a monthly figure
A savings-goal calculation works backward from an entered target. It accounts for a current amount, recurring contributions, an assumed rate and time.
The target and rate are user assumptions. The resulting monthly figure is not a recommendation or guarantee.
The assumed rate for a cash goal usually comes from the account the money is kept in. The high-yield savings vs money market comparison explains how those two accounts differ on deposit insurance, withdrawal access and where they are held. For a long-term goal held in a retirement plan, the traditional vs Roth 401(k) comparison covers when the tax is paid.
The method
How to calculate estimated monthly contribution
The current amount is first compounded across the selected period. Any remaining gap is converted into equal end-of-month contributions using the assumed monthly rate.
The formula separates the future value of the current amount from the recurring end-of-month contributions.
Worked example
Savings Goal Calculator example
For a $100,000 target, a $10,000 current amount, an assumed 4% annual rate and 10 years, the calculator estimates the equal monthly contribution under those exact assumptions.
This example explains the method. It does not recommend a financial action or predict an outcome.
Frequently asked
Savings Goal Calculator questions
What if the current amount already exceeds the target?
The estimated required monthly contribution is zero.
When are contributions assumed to occur?
At the end of each month.
Does the result include tax or fees?
No. Those variables are excluded.