Tax Provision Calculator

Calculate quarterly tax provision with current and deferred components.

Inputs

Pre-Tax Income (YTD)

Federal Tax Rate

State Tax Rate

Permanent Differences

Temporary Differences

Current Quarter

Tab to move between fields

Results

Total Tax Provision

$260,525.00

≈ 6 Teslas

Current Tax Expense$273,000.00

Deferred Tax (Benefit)/Expense$12,475.00

Effective Tax Rate26.1%

Quarterly Provision (YTD)$65,131.25

Projected Annual Tax$260,525.00

Remaining Quarters3

How to Use This Calculator

Enter year-to-date pre-tax book income.
Set your federal corporate tax rate (21% for US C-corps) and applicable state rate.
Enter any permanent differences (non-deductible expenses or tax-exempt income).
Input temporary differences (timing differences that will reverse in future periods).
Review current tax expense, deferred tax asset/liability, and total tax provision for the period.

How the result changes with Pre-Tax Income (YTD)

Pre-Tax Income (YTD)	Total Tax Provision
$10,000,000.00	$2,600,525.00
$285,000,000.00	$74,100,525.00
$615,000,000.00	$159,900,525.00
$890,000,000.00	$231,400,525.00

What each input means

Pre-Tax Income (YTD): Year-to-date pre-tax book income.
Federal Tax Rate: Federal corporate tax rate.
State Tax Rate: State income tax rate.
Permanent Differences: Non-deductible expenses or tax-exempt income.
Temporary Differences: Timing differences between book and tax (positive = deductible later).
Current Quarter: Which quarter of the fiscal year (1-4).

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Pre-Tax Income (YTD) = 1000000, Federal Tax Rate = 21, State Tax Rate = 5, Permanent Differences = 0 = 6 input(s) provided
Calculate Total Tax Provision
Total Tax Provision
260525 = $260,525
Calculate Current Tax Expense
Current Tax Expense
273000 = $273,000
Calculate Deferred Tax (Benefit)/Expense
Deferred Tax (Benefit)/Expense
12475 = $12,475

Engine last updated July 28, 2026. Checked against 3 independently-derived tests — how we verify calculators.

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