Look Up Tax Brackets
Get current federal income tax brackets and calculate marginal and effective rates for any income level.
Tax Reference Use Cases
3 step-by-step guides with instructions for Claude, ChatGPT, Copilot, and OpenClaw.
Check Capital Gains Tax Rates
Look up current long-term and short-term capital gains rates by income level and filing status.
Look Up Retirement Contribution Limits
Get the current year contribution limits for 401(k), IRA, HSA, and other tax-advantaged retirement accounts.