Contact PennyWise Calcs

Email us at [email protected]. We read everything that arrives there and reply to most messages within two business days.

What We Most Want to Hear About

• A number that does not match. If a calculator returns a figure that disagrees with your lender statement, your payroll stub, or a figure you worked out by hand, send the inputs you used and the result you expected. Recalculation errors are the one category we treat as urgent.
• A default that is out of date. Tax brackets, contribution limits, and average rates move every year. If a pre-filled value on a page no longer reflects the current year, tell us which page and which field.
• A calculator we are missing. If you needed a decision tool and could not find it here, describe the decision and the inputs you would want. Reader requests are where most of our new calculators come from.
• An accessibility problem. If a page is unusable with a screen reader, at high zoom, or on a small phone, tell us the page and the device so we can reproduce it.

What We Cannot Do

We do not provide personal financial advice, and we cannot review your individual situation, recommend products, or tell you whether a specific purchase, loan, or investment is right for you. Nothing on this site is a substitute for a licensed professional who knows your full circumstances. Questions of that kind will not receive a useful reply, and we would rather say so up front than waste your time.

Before You Send

Please do not include account numbers, card numbers, Social Security numbers, or any other sensitive identifier in an email. We do not need them to fix a calculation, and email is not a secure channel. Inputs like a loan amount, a rate, and a term are all we require.

About Your Message

Messages sent to this address are used only to answer you and to fix the problem you reported. We do not add senders to a mailing list, and we do not share or sell correspondence. Our privacy policy covers the rest. For background on how the calculators are built and checked, see the about page.