Charitable Deduction Optimizer Calculator

Compare annual giving vs. bunching donations into a Donor-Advised Fund to maximize your itemized deduction and tax savings over multiple years.

Tax Disclaimer

This calculator provides estimates based on general tax rules and may not reflect your specific situation. Tax laws vary by jurisdiction and change frequently. Consult a qualified tax professional or CPA for advice tailored to your circumstances.

Inputs

Annual Charitable Giving ($)

Adjusted Gross Income ($)

Other Itemized Deductions ($)

Filing Status

Years to Bunch

Marginal Tax Rate (%)

Tab to move between fields

Results

Bunching Benefit

$624

Total Savings (Bunched)$6,576

Total Savings (Annual)$5,952

Bunched Donation Amount$30,000

Bunch Year Tax Savings$6,576

Annual Strategy Savings/Yr$2,976

AGI Excess Carryforward$0

Annual Deduction27,000

Bunch Year Deduction42,000

Off Year Deduction14,600

How to Use This Calculator

Enter Annual Charitable Giving and your Adjusted Gross Income.
Set Other Itemized Deductions (SALT up to $10K, mortgage interest) and Filing Status.
Set Years to Bunch — grouping multiple years of donations into one year creates a large itemized deduction in the bunching year.
Enter Marginal Tax Rate % for savings calculation.
Review Bunching Benefit — the extra savings from exceeding the standard deduction in the bunching year.
A Donor-Advised Fund (DAF) lets you bunch donations for the deduction while distributing to charities over time.

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