Itemized Deduction
A list of eligible expenses that can reduce taxable income instead of the standard deduction.
Itemized deductions include mortgage interest, charitable contributions, and certain medical expenses when they exceed thresholds. They are reported on Schedule A and are the alternative to the standard deduction.
Common Itemized Deductions
| Deduction | Notes |
|---|---|
| State and local taxes (SALT) | Capped at $10,000 |
| Mortgage interest | On up to $750,000 of debt |
| Charitable contributions | Cash up to 60% of AGI |
| Medical expenses | Only amounts exceeding 7.5% of AGI |
When to Itemize
Itemize when your total itemized deductions exceed the standard deduction:
- Single: $15,000 (2025), $15,400 (2026 estimated)
- Married Filing Jointly: $30,000 (2025), $30,800 (2026 estimated)
Most filers take the standard deduction. Consider itemizing if you have:
- A large mortgage
- High state/local taxes (see the SALT cap guide)
- Significant charitable giving
One popular strategy is charitable bunching — concentrating two or more years of donations into a single year using a donor-advised fund to cross the itemization threshold. The TCJA sunset in 2026 may change both the standard deduction amounts and the SALT cap, so keep an eye on legislation.
See the decision guide: Standard vs Itemized Deduction
Related reading:
- Donor-advised fund basics
- Charitable bunching with a DAF
- AGI vs MAGI explained
- Standard deduction — current amounts by filing status
- Marginal tax rate — how to calculate what each deduction saves
- Tax planning on a budget — free strategies including itemization optimization
- Schedule A walkthrough — line-by-line guide to the form
How sharper.tax Helps
sharper.tax totals your itemized deductions from your uploaded return and compares them to the standard deduction for your filing status. When you are close to the threshold, we flag strategies like charitable bunching that could push you over. Sophisticated tax planning used to require a high-end CPA — we make it available for free.
Sources
- IRS Schedule A Instructions (Form 1040)
- IRS Publication 936 (Home Mortgage Interest Deduction)
- IRS Publication 526 (Charitable Contributions)
The information above is educational and not tax advice.