Corporate estimated tax
In accounting, corporate estimated tax means the four installments a corporation pays toward the current year's income tax when it expects $500 or more — on the 15th day of the 4th, 6th, 9th and 12th months of its tax year, each 25% of the required annual payment, through EFTPS. Underpayment is figured on Form 2220; Form 1120-W is historical.
Also called Estimated tax installments.
Authority: IRC §6655; IRS Pub. 542. Sources
The lessons that teach this
From the free founder back-office course, taught on one company's books, with exercises to work it yourself.
- Corporate estimated tax: four installments a yearFour installments a year once the tax reaches $500, each a quarter of the required annual payment, worked for Northwind's first full year.8 min
- The annual compliance calendar, 2026–2027Northwind's 2026–2027 calendar computed from rules: the federal return, estimates, 1099s, Delaware's March 1, and the dates that follow events.9 min
For founders
The same idea written for a founder: what it costs a startup that ignores it, and what to do in a real month.
What it is not called
Each of these means something else. Use one here and an accountant reading the product notices.
- quarterly payroll deposits
- Form 1120-W (no longer revised)
Nearby in the catalog
No component names this concept outright. These sit in the same part of the system.
Also in Tax
Defined in Lexicon. This page is generated from that document, so the two can't disagree.