Charitable Donation Tax Relief Calculator
Enter the donation, your marginal rate and your other deductions.
Tax saved
β
Enter values above
After-tax cost of donation
β
Effective cost (%)
β
Itemised deductions total
β
Excess over standard deduction
β
Cost per $100 donated
β
Worked example
With the default inputs shown below, this calculator returns the following results:
| Input | Value |
|---|---|
| Donation amount ($) | 5000 |
| Marginal tax rate (%) | 32 |
| Other itemised deductions ($) | 15000 |
| Standard deduction ($) | 14600 |
| Annual income ($) | 150000 |
| Result | Value |
|---|---|
| Tax saved | $1,728.00 |
| After-tax cost of donation | $3,272.00 |
| Effective cost (%) | 65.44% |
| Itemised deductions total | $20,000 |
| Excess over standard deduction | $5,400 |
| Cost per $100 donated | $65.44 |
Values shown are produced by this page in your browser; change any input to update them.
How to use the Charitable Donation Tax Relief Calculator
- Donation amount ($) β default 5000
- Marginal tax rate (%) β default 32
- Other itemised deductions ($) β default 15000
- Standard deduction ($) β default 14600
- Annual income ($) β default 150000
- Press Calculate to update the results instantly.
Frequently asked questions
Because only the part of your itemised deductions that exceeds the standard deduction actually reduces your tax. If you already itemise, the full donation counts; if you do not, only the excess matters.
For single filers it is $14,600, for married filing jointly $29,200, and for heads of household $21,900. These figures are indexed for inflation each year.
At fair market value β what the item would sell for second hand. Records matter, so keep a dated inventory with condition and value, and get a written acknowledgement above $250.