When it comes to understanding standard deduction vs itemizing, knowing the IRS rules is essential. Every year, tens of millions of Americans face the same question when filing their taxes: should I take the standard deduction or itemize? Getting this right can mean the difference of hundreds or thousands of dollars. Here’s exactly how to decide.
What Are the 2025 Standard Deduction Amounts?
For the 2025 tax year (filed in early 2026), the standard deduction amounts are:
- Single / Married Filing Separately: $15,000
- Married Filing Jointly: $30,000
- Head of Household: $22,500
If you’re 65 or older or blind, you get an additional $1,550–$1,950 added to the standard deduction depending on your filing status.
About 90% of filers take the standard deduction because it’s simply larger than what they can itemize. But for the other 10%, itemizing can save significantly more.
What Can You Itemize?
Itemized deductions go on Schedule A and can include:
- Mortgage interest — On loans up to $750,000 (guide →)
- State and local taxes (SALT) — Property taxes + state income/sales tax, capped at $10,000 (guide →)
- Charitable contributions — Cash and non-cash donations to qualifying organizations
- Medical expenses — Amount exceeding 7.5% of your AGI (guide →)
- Casualty and theft losses — From federally declared disasters only
The Simple Math: When Does Itemizing Win?
You should itemize when your total deductible expenses exceed the standard deduction for your filing status. Let’s look at two examples:
Example 1: Single Renter
- Mortgage interest: $0 (renting)
- State income tax: $3,200
- Charitable donations: $800
- Total itemized: $4,000
- Standard deduction: $15,000
- Decision: Take the standard deduction. It wins by $11,000.
Example 2: Married Homeowner
- Mortgage interest: $18,000
- Property taxes + state income tax: $10,000 (SALT cap)
- Charitable donations: $5,000
- Medical expenses over 7.5% AGI: $4,000
- Total itemized: $37,000
- Standard deduction: $30,000
- Decision: Itemize. Saves an extra $7,000 in deductions.
The SALT Cap Changes Everything
Before 2018, itemizing made sense for many more people. The Tax Cuts and Jobs Act capped the state and local tax (SALT) deduction at $10,000 and nearly doubled the standard deduction — which is why most people now take the standard deduction.
Homeowners with large mortgages and people in high-tax states like California, New York, and New Jersey are still often better off itemizing. But middle-income renters almost never are.
Can You Switch Every Year?
Yes. You can choose whichever option is larger in any given tax year. Some taxpayers strategically “bunch” deductions — making two years of charitable contributions in a single year, for example — so that one year’s itemized total exceeds the standard deduction while they take the standard deduction in the other year.
For more tax guidance, see our guides on medical expense deductions and property tax deductions and the SALT cap. For official IRS information, visit the IRS Topic 501 on itemized deductions.
Quick Decision Tool
Add up your potential itemized deductions (mortgage interest + SALT up to $10K + charitable + medical over 7.5% AGI). If the total exceeds your standard deduction for your filing status, itemize. If it doesn’t, take the standard deduction.
Our full guide: Standard Deduction vs. Itemizing 2025 →
This article is for educational purposes only. Consult a tax professional for personalized advice.