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Welcome to Sam Brenner's tax calculator.
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To modify the values here, first make a copy with File > Make a copy
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Any value in blue is meant to be editable by the user.
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If you don't live in NY, you can fill in your state and local tax schedules in the "Tax brackets" tab.
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I make no guarantees that this calculator works, and I'm not an accountant or tax lawyer. Use at your own risk.
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Inputs
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Total income$150,000
Put your income here
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Target annual charitable contribution$15,000
Put the amount you'd aim to donate or otherwise itemize per year without bunching, excluding itemized state/local taxes
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Noncharitable itemized deductions$0
This is where deductions like mortgage interest go
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Include state and local taxes?TRUE
If you don't live in NYC and want to include state and local taxes, you need to override the state and local tax brackets in the Tax brackets tab to the right
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Standard deduction on state and local taxes$8,000
NY is $8,000 for individuals and $16,050 for married filing jointly. CA is $4,803 for individuals and $9,606 for married filing jointly
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Maximum state and local tax deduction$10,000
Defined by IRS, see https://www.irs.gov/newsroom/irs-provides-tax-inflation-adjustments-for-tax-year-2022
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Standard deduction on federal taxes$12,950
If married filing jointly, replace with $25,900. Defined by IRS, see https://www.irs.gov/newsroom/irs-provides-tax-inflation-adjustments-for-tax-year-2022
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Outputs
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No bunching
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Tax amount (federal + local + state)$36,963
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Bunching
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Tax amount in years when you donate$40,569
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Tax amount in years when you don't$31,832
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Average annual tax amount$36,201
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Tax savings from bunching$762
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