Tax-first docs lexicon
TaxTermsLexicon.com explains U.S. tax terminology in the order people really encounter it: returns, forms, withholding, payroll tax, deductions, credits, basis, IRS notices, audits, and compliance follow-up.
Use this site when a tax word showed up on a return, pay statement, Schedule, IRS letter, or filing choice and you need more than a shallow glossary line.
Start from the task in front of you, not from the broadest section label. Each lane points to the first term that usually unlocks the rest.
Use these pages when the main question is what return is being filed and how the tax calculation moves from income to tax owed.
Start here when the issue is wage reporting, paycheck withholding, or how a payroll tax amount was produced.
Use these pages when the question is whether something lowers taxable income, lowers tax later, or changes eligibility based on household facts.
Use these pages when the term affects who can claim someone, which filing status applies, or why a credit rule changed.
Use these pages when the issue moves beyond ordinary payroll wages into Schedule C, self-employment tax, depreciation, or entity treatment.
Use these pages when the issue is basis, Schedule D reporting, capital gain classification, an IRS follow-up letter, or the consequence of a missed payment or filing step.
The site is arranged as a docs-style library. Open the section that matches the workflow stage, then use the related-term trails inside the articles.
Core calculation language such as gross income, AGI, taxable income, tax brackets, and tax liability.
Start with Gross IncomeReturns, schedules, wage forms, information returns, and the filing steps that connect them.
Start with Form 1040Terms that reduce income before tax is computed or change which expenses matter on the return.
Start with Standard DeductionCredits that reduce tax, create refunds in some cases, or depend on income and household facts.
Start with Child Tax CreditHousehold-status terms that affect rates, deductions, and who can be claimed.
Start with Filing StatusHow tax gets paid during the year through payroll withholding or quarterly estimated payments.
Start with WithholdingFICA, Medicare, Social Security tax, and self-employment equivalents that appear on wage income.
Start with FICA TaxDepreciation, Section 179, entity choice, pass-through treatment, and corporate tax structure.
Start with Pass-Through EntityHow property sales, basis adjustments, capital loss rules, and holding periods affect tax reporting.
Start with Cost BasisThe site also covers the follow-up and edge layers that readers often need when a tax question moves beyond the main federal filing chain.
Use Start Here when you know the document or problem in front of you but not the right section name yet.
Open Start HereUse Library when you want the whole section directory with sample entry pages under each cluster.
Open LibraryUse the right destination when the request is about products, accounts, or corporate trust rather than tax terminology.