These terms explain the permitted use of this website’s calculators and content, your responsibilities when using them, and the limits of the results provided.
Permitted use
You may use the calculators and content for personal, educational, work, or client-planning purposes. You are responsible for using the service lawfully and providing accurate information relevant to the calculation.
Enter only the information needed to obtain a result. When calculating for someone else, use only information you are authorized to use.
Checking whether a result applies
Before relying on a calculation, review the information on the calculator’s page, including:
- Its intended purpose and the situations it covers.
- The required inputs, units, and relevant time period.
- The assumptions, exclusions, and explanations accompanying the result.
- Any applicable tax year, jurisdiction, or eligibility conditions.
A result may not apply if your circumstances differ from the calculator’s assumptions. Missing facts, exceptions, or differences between your inputs and source records can materially change the outcome.
You remain responsible for checking inputs and deciding whether a result is suitable for your intended use. When using a calculator for client planning, make its assumptions and limitations clear to anyone who will rely on the estimate.
Estimates, not professional advice
The calculators and accompanying content provide estimates and general information, not tax, legal, accounting, or financial advice. A result does not establish that you qualify for a deduction, credit, benefit, or other tax treatment.
The site does not guarantee that a result is current, complete, suitable for a particular tax return, or accepted by the IRS or any state, local, or other authority.
Before using a result to prepare a return, make a payment, or take another consequential action, verify it against your records and the applicable official instructions. Seek advice from a qualified professional when your circumstances require an individual assessment.
Changes, availability, and recordkeeping
Calculators, formulas, assumptions, source inputs, and explanatory content may change or be withdrawn. The service may also become temporarily unavailable. Do not assume that a calculator will remain available or produce the same result after an update.
If a calculation matters to a later decision, keep your own record of the inputs, result, calculation date, and relevant assumptions or tax year. Retain the underlying documents needed to verify the calculation; a calculator result is not a replacement for those records.