after-tax
What is left once the government has taken its share.
A quantity measured net of applicable tax.
What that means in practice
Any figure called after-tax has already had tax removed. It is the honest number for comparing one thing with another. Headline amounts hide very different tax treatments underneath. So a smaller after-tax figure can beat a bigger headline one.
After-tax measurement is the correct basis for comparing returns, compensation or costs across instruments and jurisdictions with differing treatment. ⚠️ The qualifier is only meaningful when the taxes included are stated: 'after-tax' commonly means after income tax alone and silently excludes payroll, sales and local taxes.
Questions people ask
Is this a rule, or just a way of describing something?
It describes how something works. It does not set a number. after-tax is an idea you need in order to read the rules. It is not a rule with a rate of its own. That is why it turns up in federal, state and local tax alike.
Do I need to understand other terms before this one makes sense?
Usually, yes. after-tax sits in a small cluster of related ideas rather than standing alone. The linked terms below are the ones it leans on. Reading it in isolation causes most of the confusion about it.
I have seen this called something else. Is it the same thing?
Probably yes. after-tax travels under several names. Forms, employers and news coverage each tend to use a different one for the same rule. That is a real source of confusion, not a trivial one. The alternatives are listed on this page.
Is this a statutory term or an analytical one?
This is an analytical or procedural concept rather than a rate-bearing statutory provision. It applies across levels of government and tax types, and is used to interpret provisions that do carry rates rather than imposing liability itself.
What conceptual dependencies does this term carry?
This term has multiple conceptual dependencies, enumerated in the related-terms list. Definitions in tax law are frequently mutually referential — a provision's meaning depends on defined terms elsewhere in the code — so isolated reading commonly produces error.
What alternative designations refer to this concept?
This concept is referred to by multiple designations across statutory text, agency guidance, payroll documentation and common usage. The alternatives are enumerated on this page. ⚠️ Terminology divergence is a frequent source of error where a statutory term and its colloquial equivalent are not exactly co-extensive.