Savings Growth
Project savings value with deposits and compound interest.
About Savings Growth
The starting balance earns compound growth while each monthly deposit is valued through the annuity factor to a future total. Interest earns on interest, so even small regular deposits become surprisingly large pools over a decade or two.
Formula
Savings Growth
FV = initial x (1+i)^n + deposit x ((1+i)^n - 1)/i
- i
- Monthly rate from the annual interest divided by 12
- n
- Months (years x 12)
Worked example
With the default values below, Savings Growth returns Future Value of $47,056. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Initial amountminimum 0
- 5,000
- Monthly depositminimum 0
- 250
- Interest rateaccepts 0–30 %
- 5 %
- Yearsminimum 0.5 years
- 10 years
Results
- Future Value
- $47,056
- Total Contributed
- $35,000
- Growth Factor
- 1.34
Step by step
- 1Values used
- 2Savings Growth
- 3Future Value= 47,056
- 4Total Contributed= 35,000
- 5Growth Factor= 1.34
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or fees or charges into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Savings Growth calculated?
FV = initial x (1+i)^n + deposit x ((1+i)^n - 1)/i The starting balance earns compound growth while each monthly deposit is valued through the annuity factor to a future total.
Why does Savings Growth matter?
Interest earns on interest, so even small regular deposits become surprisingly large pools over a decade or two.
What values do I need to enter?
This calculator takes 4 inputs: Initial amount, Monthly deposit, Interest rate, Years. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.