The accounting glossary
What is estimated tax?
Estimated tax means paying US tax during the year on income that is not sufficiently covered by withholding. Self-employed income, investment income and rental income are common reasons to examine estimated payments. The payment is an advance toward the final liability, not a separate tax.
The short answer
Estimated tax payments complement withholding. For an individual, Form 1040-ES helps estimate the payment requirement; the annual return later reconciles tax due with withholding, credits and payments. The taxpayer’s status, timing of income and applicable jurisdiction determine the actual schedule. A federal calculation should not be copied into a state calculation without checking its rules.
The terms on a payment schedule
| Term | Meaning |
|---|---|
| Estimated tax | Tax estimated before the final return |
| Estimated tax payment | An installment paid toward that liability |
| Withholding | Tax withheld by a payer |
| Form 1040-ES | Individual federal estimate and payment information |
Scroll the table if needed.
Who should examine the requirement?
Start with income and tax already covered by withholding. A consultant may have no employer withholding, while an employee with additional investment income may need to review the shortfall. Corporations use a different framework from individuals; a company estimate is not the owner’s personal installment.
Prepare a record of the prior-year return, expected current-year income, withholding and payments already made. Identify the federal and state jurisdictions separately. These documents let the professional choose a method with explicit assumptions, rather than divide an unsupported total by four.
A fictional example: $24,000 divided into four installments
Assume a calendar-year US resident consultant has prior-year federal tax of $24,000, prior-year adjusted gross income below the higher-income threshold, a full prior tax year, no withholding and eligibility to use the prior-year method. An equal-installment illustration gives $6,000 per period.
This example explains the arithmetic. A change in income, filing status or eligibility can change the relevant calculation. Four federal payment periods do not mean four equal-length calendar quarters. Check the current instructions and use the estimated-tax guide for the full timing discussion.
Keep the calculation and the follow-up together
In Tax Workflow, the firm prepares an Estimated Tax baseline, a manager approves it and the installments can then be followed as payments are recorded. The useful distinction is between an amount planned and an amount actually paid. Keep the payment date, jurisdiction and supporting evidence with that record.
Common questions
Is estimated tax the same as withholding?
Both contribute toward tax during the year. Withholding is made by a payer; an estimated payment is made by the taxpayer. Read them together when reviewing the annual payment requirement.
Are state estimates identical to federal estimates?
No. Jurisdictions can use different methods and payment schedules. Review each applicable state independently, including any local tax that affects the taxpayer.
Does paying the estimate settle the annual return?
No. The annual return reconciles the final liability with withholding, credits and payments. An estimated payment is a payment on account, not a completed return.
Sources for further reading
Dated source checks do not replace review by the professional responsible for your engagement.
- IRS — Estimated taxesChecked
- IRS — Form 1040-ESChecked
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