CD Calculator

Estimate CD maturity value, interest earned, APY impact, after-tax return, and inflation-adjusted value based on your deposit amount, rate, term, and compounding frequency.

Calculate CD Growth

CD maturity value is estimated using compound interest on the original deposit for the full CD term. Taxes, inflation, and any entered penalty are shown separately for comparison.
Your result will appear here.

How the CD calculator works

Starting deposit:
Your initial deposit grows for the full CD term based on the rate and compounding frequency selected.

Interest earned:
The calculator subtracts the original deposit from the maturity value.

After-tax value:
The tax rate entered is applied to the earned interest only, not the original deposit.

Inflation-adjusted value:
The maturity value is adjusted to show estimated buying power in today’s dollars.

Why CD estimates matter

A CD estimate helps compare deposit amounts, terms, and rates before locking money into a certificate of deposit. It is useful for short-term savings goals, low-risk cash planning, and comparing CD options with other savings tools.

This is a planning estimate and not a bank disclosure or guaranteed quote.

What your result means

Your result shows estimated maturity value, interest earned, APY, after-tax maturity value, inflation-adjusted value, and a penalty-adjusted value if you enter an early withdrawal penalty.

CD calculator tips

Frequently asked questions

What is a CD calculator?

A CD calculator estimates how much a certificate of deposit may be worth at maturity based on deposit amount, interest rate, compounding, and term.

What is APY?

APY stands for annual percentage yield. It reflects the effect of compounding over one year and is often used to compare savings products.

Does a CD grow with compound interest?

Yes. Many CDs compound interest on a regular schedule such as daily, monthly, or quarterly, depending on the product.

Does this include early withdrawal penalties automatically?

No. This version only includes a penalty if you enter one manually for comparison purposes.