Revenue, expenses, entity tax, partners & ownership — annualize from any date
Business setup
Tax year
Entity type
Business state
Owners
C-Corporation mode: The corporation pays a flat 21% federal income tax plus state corporate income tax on net taxable income. There is no pass-through to shareholders. Partners are taxed personally only on W-2 salary and/or dividends received from the corporation — not on corporate profits.
Revenue & expenses
Gross revenue
$
Business expenses
$
Home office
$
Vehicle / Mileage
$
Year-to-date annualization
Numbers above are year-to-date — annualize to full year
Corporate prior tax payments already made this year
Federal corp prior payments
$
State corp prior payments
$
Ann. Revenue
$0
−
Deductions
$0
=
Net income
$0
→
Corp tax
$0
+
State biz tax
$0
Annualized revenue
—
Full year
Net business income
—
After deductions
Entity fed tax
—
—
State entity tax
—
—
Distributable
—
To owners
Owners & ownership allocation
Owner nameOwnership %Filing status
Income allocated to each owner
PART 2 — Individual Tax Calculation
2
Individual Income Tax — Per Owner
Each owner's allocated income + personal income → federal & state quarterly tax
How to make your quarterly payments
Federal — IRS Direct Pay or EFTPS
No enrollment required for Direct Pay
Option 1 — IRS Direct Pay (fastest): Visit IRS Direct Pay, select "Estimated Tax", choose tax year, enter bank info. Instant confirmation, no login required.
Option 2 — EFTPS (best for recurring): Enroll once at EFTPS.gov. Schedule all 4 quarterly payments in advance so you never miss a due date.
Option 3 — Mail a check: Payable to "United States Treasury". Write your SSN and "[Year] Form 1040-ES" on the memo line.
Select a business state above to see state-specific payment instructions.
Estimate only. Federal brackets per official IRS Rev. Proc. (2026 projected). Does not account for AMT, tax credits, NIIT, phaseouts, or all state-specific rules. C-Corp: corporate-level tax only — shareholder salary/dividends taxed separately on personal returns. Confirm with your CPA. Update annually each January.