How it works
Effective rate (%) = [(1 + nominal/n)^n − 1] × 100
Input definitions
- Nominal annual rate (%)
- Enter the value in the labeled unit.
- Compounding periods/year
- Enter the value in the labeled unit.
A worked example
- Nominal annual rate (%)
- 12
- Compounding periods/year
- 12
12.68
Assumptions & limits
Returns a percentage; fixed nominal interest model without fees. Not a regulatory APR quote.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Are these investment and borrowing results guaranteed?
No. These are deterministic estimates from the inputs and stated method, not predicted returns or lending offers. Actual fees, tax, timing and contractual terms may differ.
How does the Effective annual rate tool work?
Effective rate (%) = [(1 + nominal/n)^n − 1] × 100.
What are the assumptions and limits of Effective annual rate?
Returns a percentage; fixed nominal interest model without fees. Not a regulatory APR quote.