DIRECT ANSWER
What to know first
Estimated tax is a way to pay tax during the year when withholding may not cover the expected liability. A useful calculation considers current income, deductions, credits, withholding, prior payments, and state obligations. It should be revisited after major changes instead of automatically repeating last year's vouchers.
Who may need an estimated-tax review
Self-employment, business income, rental activity, investment gains, retirement distributions, and insufficient wage withholding can create a need to pay during the year. The federal and state calculations use their own thresholds and rules.
Withholding and estimated payments can work together. In some cases, changing wage or retirement withholding may be part of the plan rather than relying only on separate installments.
Information used in the calculation
- Prior-year federal and state returns
- Year-to-date wages, withholding, and retirement distributions
- Current business or rental profit and expected full-year results
- Investment income, gains, deductions, credits, and other major changes
- Estimated payments already made and their payment dates
When to recalculate
Revisit the projection after a large gain, change in business profit, property transaction, bonus, equity-compensation event, major deduction, or change in withholding. Taxpayers with uneven income may need a different installment analysis supported by period-by-period records.
An extension to file generally does not extend the time to pay. Keep confirmation records for every federal and state payment.
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Related tools and service paths
2026 federal estimated-tax dates
See the four general federal installment dates and download the calendar file.
Missed an estimated-tax payment?
Use a practical next-step guide to verify the installment, update the projection, and organize payment records.
Estimated-tax planning service
Review current income, withholding, prior payments, expected changes, and state obligations.
AUTHOR
Stefano Tavella, CPA
Stefano Tavella, CPA leads Tavella CPA Group, a cloud-based CPA firm serving individuals and small businesses with tax preparation, planning, notice assistance, and related services.
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