Contact SumStride

Updated October 12, 2026

For general questions, calculator feedback or corrections, email hello@sumstride.com.

Reporting a calculator issue

To help us reproduce a problem, include the calculator URL, non-identifying sample inputs, the result you expected and the result you observed. Please do not send account numbers, Social Security numbers, tax documents or other sensitive financial information.

Questions about financial decisions

SumStride provides educational calculators and explanations, not individualized financial, investment, tax, legal or lending advice. We cannot review personal financial documents or recommend a specific financial product or provider. For decisions that depend on your circumstances, verify details with the relevant lender, employer, plan administrator, tax professional or other qualified professional.

Privacy

Email is handled outside the calculator itself and may contain whatever information you choose to send. See the Privacy Policy for details about website analytics and technical data.

You can also review the Methodology, Financial Disclaimer and Terms of Use.