Calculator Form
Example Data Table
| Starting Balance | Regular Contribution | Contribution Frequency | Annual Rate | Compounding | Years | Target | Inflation | Projected Balance |
|---|---|---|---|---|---|---|---|---|
| 500.00 | 50.00 | Monthly | 5.00% | Monthly | 5 | 5000.00 | 2.00% | 4042.23 |
| 500.00 | 50.00 | Monthly | 5.00% | Monthly | 5 | 5000.00 | 2.00% | Inflation Adjusted: 3661.18 |
| 500.00 | 50.00 | Monthly | 5.00% | Monthly | 5 | 5000.00 | 2.00% | Interest Earned: 542.23 |
Formula Used
This page first converts the stated annual rate into an effective annual rate:
Effective Annual Rate = (1 + r / m)m - 1
Here, r is the annual nominal rate and m is the compounding periods per year.
The calculator then converts that effective rate into a daily growth factor:
Daily Rate = (1 + Effective Annual Rate)1 / 365 - 1
Each step updates balance using the selected contribution plan:
New Balance = (Previous Balance + Contribution) × (1 + Daily Rate)
Inflation adjusted balance is estimated with:
Real Balance = Final Balance / (1 + Inflation Rate)Years
The goal difference is:
Goal Difference = Final Balance - Target Amount
How to Use This Calculator
- Enter the starting balance already available for the child.
- Enter the regular deposit amount and choose how often it is added.
- Set the annual interest rate and matching compounding frequency.
- Enter the total saving period in years.
- Provide a target amount to compare the result against a goal.
- Add an inflation rate if you want a present-value style estimate.
- Set spend, save, give, and invest percentages so they total 100.
- Press calculate to view the results, chart, yearly schedule, CSV file, and PDF report.
Frequently Asked Questions
1. What does this calculator estimate?
It estimates a child’s projected balance, total contributions, growth earned, inflation-adjusted value, goal difference, and simple allocation buckets for spending, saving, giving, and investing.
2. How are regular deposits handled?
Deposits are added at the selected interval. The balance then grows through a daily rate derived from the stated annual rate and chosen compounding frequency.
3. Why include inflation?
Inflation helps show how much future money may be worth in today’s purchasing power. It gives a more realistic long-term planning view.
4. What do the allocation percentages mean?
They split each contribution and the projected ending balance into spend, save, give, and invest buckets. The four values must total 100.
5. Can I use zero interest?
Yes. If the annual interest rate is zero, the calculator still projects balances from the starting amount and the scheduled contributions only.
6. Does this replace financial advice?
No. It is a planning and teaching tool. Actual account returns, fees, taxes, and product rules can change real outcomes.
7. Why may results differ from a bank statement?
Different institutions use different day counts, posting dates, compounding rules, fees, and rounding methods. Those details can slightly change totals.
8. What should be changed first to reach a goal faster?
Increasing regular contributions usually helps first. Extending the time horizon or improving the rate can also raise the projected balance.