How it works
End-of-period deposit = target × r / [(1+r)^n−1]. At zero interest divide the target by the deposit count.
Input definitions
- Target amount
- Enter the value in the labeled unit.
- Interest per period (%)
- Enter the value in the labeled unit.
- Number of deposits
- Enter the value in the labeled unit.
A worked example
- Target amount
- 10000
- Interest per period (%)
- 0
- Number of deposits
- 20
Assumptions & limits
Planning model using the rates, cash flows and periods entered. Examples are illustrative, not market quotes or personalised financial advice. Taxes, inflation and transaction costs are excluded unless explicitly entered.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-18. Content checked against the stated method and examples. Our verification approach.
Common questions
When is each deposit made?
Deposits occur at the end of equal periods. Enter a rate per deposit period, such as a monthly rate for monthly deposits.
How does Sinking fund periodic deposit work?
End-of-period deposit = target × r / [(1+r)^n−1]. At zero interest divide the target by the deposit count.
What should I check before using Sinking fund periodic deposit?
Planning model using the rates, cash flows and periods entered. Examples are illustrative, not market quotes or personalised financial advice. Taxes, inflation and transaction costs are excluded unless explicitly entered.