Taxes
Taxes is a data page on the Personal Finance desk of Glassbox Auditing. Federal income tax brackets, standard deductions and capital gains rates for the last two tax years from the IRS, with a calculator that works out tax bracket by bracket, marginal against effective rates, and payroll taxes. It shows what a household owes and where federal revenue comes from.
What is on this page today?
- 2027 standard deduction, married couples filing jointly: $33,200 — Subtracted from income before federal tax is figured; up $1,000 from $32,200 for 2026 (IRS, 31 Dec 2026)
- 2027 federal income tax: the 37% bracket starts at $661,375 of taxable income for single filers, 3.2% above 2026 — Where each rate starts, single filers; married couples filing jointly reach 37% at $793,650 · bracket thresholds rose 3.2% to 3.2% on 2026; only income inside a band is taxed at its rate (IRS, 31 Dec 2026)
- 2027 standard deduction, single filers: $16,600 — Subtracted from income before federal tax is figured; up $500 from $16,100 for 2026 (IRS, 31 Dec 2026)
- A single filer with $100,000 of wages pays 12.9% of it in federal income tax in 2027; the next dollar is taxed at 22% — Effective rate by wages, standard deduction, no children or other income, against 13.2% at the same wages in 2026 · married filing jointly 7.5% at $100,000 (IRS, 31 Dec 2026)
Where does the data come from?
Items on this page come from IRS. Each item links to its own source. All sources, how items are checked.
What does this page lead to?
- Budget & Spending (Macro): Bracket thresholds and deductions set how much household income reaches the Treasury as individual income tax, the largest single source of the federal receipts on the budget page. (moves the same way; each filing season; economy scale) Source: IRS annual inflation adjustments (Rev. Proc. 2024-40 for 2025, Rev. Proc. 2025-32 for 2026).
- Investing Basics (Personal Finance): Capital gains rates and account limits shape after-tax returns, which is why tax-advantaged accounts and low-turnover index funds are compared on the investing page. (either way, depending on the cause; each tax year; economy scale) Source: IRS annual inflation adjustments (Rev. Proc. 2024-40 for 2025, Rev. Proc. 2025-32 for 2026).
What feeds this page?
- Prices & Inflation (Macro): The IRS raises each bracket threshold and the standard deduction every year by chained CPI inflation, so faster inflation widens the brackets on Taxes the next tax year. (moves the same way; the next tax year; economy scale) Source: IRS annual inflation adjustments (Rev. Proc. 2024-40 for 2025, Rev. Proc. 2025-32 for 2026).