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Contact the Ledger
Spotted a number that looks off, or have a question about how a figure was derived? We want to hear from you — an accurate result is the entire point of this site.
Reviewed & updated · Editorial desk
Quick answer
Email hello@capgainstaxcalc.com to report an error or ask a question. We especially want to hear about any calculation that looks wrong — include your inputs and the number you expected so we can reproduce it. Confirmed corrections are published with a dated changelog. We read every message; replies usually take a few business days. We cannot give personal tax advice.
Report a calculation that looks off
This is the message we care about most. If a result does not match what you expected, tell us — corrections keep the whole site honest.
✉ Report an errorAsk a question
Want to know how a bracket, formula, or IRC citation was applied? Ask and we will explain the derivation behind the number.
✉ Ask a questionPrefer to copy the address? Write to us at hello@capgainstaxcalc.com. This is a placeholder inbox the site owner can change; it is monitored by the editorial desk.
What should I include when I report an error?
The more of these you share, the faster we can reproduce and confirm the issue:
- Filing status — single, married filing jointly, head of household, or married filing separately.
- The figures you entered — proceeds, cost basis, other taxable income, and any real-estate improvements or selling costs.
- Holding period — the buy and sell dates, or whether you set it to long- or short-term manually.
- State — if you selected one, so we can check the state rate applied.
- What the calculator returned vs. what you expected — and, if you have it, the source for your expected number.
- A shareable link — use the calculator's "Copy shareable link" button; it encodes your exact inputs.
Why the detail helps: the engine applies the 0/15/20% long-term bands by stacking your gain on top of taxable income per IRC §1(h), adds the 3.8% NIIT per IRC §1411, and applies the home-sale exclusion under IRC §121. A small change in inputs can move the result across a band, so reproduction details let us tell a real bug from expected stacking behavior.
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How are corrections published?
When you flag something and we confirm it is a genuine error, we do two things. First, we fix the engine or the figure. Second, we log the change — the date it was applied and a plain description of what moved and why — so anyone can see that the number they are reading has been reviewed. Every calculating page also carries a Reviewed & updated date near the top, checked against IRS releases and the statutory text of IRC §1(h), §1411, and §121.
Dollar thresholds marked est. across the site are projected 2026 figures, owner-verifiable against the final IRS release. If a final IRS number lands and differs from our projection, that update is logged here too.
2026-07-20Baseline. Changelog opened for the 2026 tax-year edition. Federal 0/15/20% engine and NIIT logic verified against IRC §1(h) and §1411 edge cases; no open corrections.
No confirmed calculation errors are currently outstanding. Help us keep it that way — if a figure looks wrong, send it in.
What can't you help with?
The Capital Gains Ledger is an independent educational publication, not a tax firm. We cannot prepare your return or give advice tailored to your situation — that includes AMT interactions, §1250 depreciation recapture, the 28% collectibles rate, wash-sale rules, and loss carryforwards, which the calculator does not model. For a filing decision, bring your figures to a licensed CPA or tax attorney. What we can do is explain, in the open, how any published number was calculated and point you to the law behind it (IRS Topic No. 409, IRS Publication 550, IRS Publication 523).
Contact, answered
How do I report a calculation that looks wrong?
Email hello@capgainstaxcalc.com with your inputs and the result. Include your filing status, the gain, the holding period, and any state you selected, plus the number you expected. The calculator's "Copy shareable link" button encodes your exact inputs, which makes reproduction almost instant. Confirmed bugs are fixed and logged in the dated changelog above.
How fast will you respond?
We read every message and usually reply within a few business days. This is a small independent publication. Reports of a miscalculation jump the queue — an accurate number is the reason the site exists.
Can you give me personal tax advice?
No. We are an educational publication and cannot provide personalized tax, legal, or investment advice or prepare a return. For your specific situation, consult a licensed CPA or tax attorney. We are always glad to explain how a published figure or formula was derived and cite the IRC section behind it.
Where do published corrections appear?
In the dated changelog on this page. Each confirmed correction is logged with the date it was applied and a plain description of what changed. Every affected page also shows a Reviewed & updated date so you can see when its figures were last checked against IRS releases and the statutory text.