Itemized Deductions

Detailed Explanation

Itemized deductions are eligible expenses that individuals can claim on their tax returns to decrease their taxable income, rather than taking the standard deduction. By itemizing, taxpayers list allowable expenses and deduct the total from their adjusted gross income (AGI), potentially lowering their overall tax liability. Common itemized deductions include medical and dental expenses exceeding a certain percentage of AGI, state and local taxes (up to $10,000), mortgage interest on qualified residences, charitable contributions to eligible organizations, and certain casualty and theft losses.

Taxpayers choose to itemize deductions when the total of their eligible expenses surpasses the standard deduction amount for their filing status. The Tax Cuts and Jobs Act (TCJA) of 2017 significantly increased the standard deduction, leading fewer taxpayers to benefit from itemizing. Additionally, the TCJA placed limitations on some itemized deductions, such as capping the state and local tax deduction at $10,000 and suspending miscellaneous itemized deductions subject to the 2% AGI floor until 2025.

To itemize deductions, taxpayers must use Schedule A attached to their Form 1040. Accurate record-keeping is essential, as the IRS may require documentation to substantiate the deductions claimed. It’s important to review current tax laws annually, as deduction limits and eligibility can change due to new legislation or inflation adjustments.

Example

Consider Emily, a single taxpayer with an adjusted gross income of $70,000 for the tax year. She has the following deductible expenses:

• Mortgage interest: $8,000
• State and local taxes: $6,000
• Charitable contributions: $2,500
• Unreimbursed medical expenses: $5,000

Medical expenses are only deductible for the amount exceeding 7.5% of AGI:

1. Calculate 7.5% of AGI: $70,000 × 7.5% = $5,250

2. Since Emily’s medical expenses are $5,000, which is less than $5,250, she cannot deduct any medical expenses.

Total itemized deductions:

• Mortgage interest: $8,000
• State and local taxes (SALT limit): $6,000
• Charitable contributions: $2,500
• Total: $16,500

The standard deduction for a single filer in 2023 is $13,850. Since Emily’s itemized deductions total $16,500, exceeding the standard deduction, she should itemize to reduce her taxable income by an additional $2,650.

Key Articles Related To Itemized Deductions

• The Most Common Tax Deductions
• How To Find A Tax Preparer (And What To Look For)

Related Terms

Adjusted Gross Income (AGI): An individual’s total gross income minus specific adjustments, serving as the basis for calculating taxable income.

Alternative Minimum Tax (AMT): A parallel tax system ensuring that individuals and corporations pay at least a minimum amount of tax by limiting certain tax credits and deductions. 

Charitable Contributions: Donations made to qualified organizations that can be deducted from taxable income when itemizing deductions.

Exemption: An amount previously allowed to reduce taxable income for taxpayers and dependents (personal exemptions are suspended under the TCJA until 2025).

Medical Expense Deduction: A deduction for unreimbursed medical expenses that exceed 7.5% of AGI.

Mortgage Interest Deduction: A tax deduction for interest paid on a qualified residence loan, subject to certain limits.

Schedule A: The IRS tax form used to report itemized deductions, attached to Form 1040.

Standard Deduction: A fixed dollar amount that reduces the income on which you’re taxed, varying based on filing status.

State and Local Tax Deduction (SALT): A deduction allowing taxpayers to subtract state and local taxes paid from their federal taxable income, capped at $10,000.

Tax Cuts and Jobs Act (TCJA): A significant tax reform law passed in 2017 that made changes to tax rates, deductions, and credits.

FAQs

When should I itemize deductions instead of taking the standard deduction?

You should itemize if the total of your eligible expenses exceeds the standard deduction for your filing status, potentially lowering your taxable income more than the standard deduction would.

What expenses are eligible for itemized deductions?

Common eligible expenses include mortgage interest, state and local taxes (up to $10,000), charitable contributions, and certain medical and dental expenses exceeding 7.5% of your Adjusted Gross Income (AGI).

Has the Tax Cuts and Jobs Act affected itemized deductions?

Yes, the TCJA increased the standard deduction, reduced or eliminated some itemized deductions, and placed limits on others, such as capping the SALT deduction at $10,000.

Can I deduct medical expenses on my tax return?

You can deduct unreimbursed medical and dental expenses that exceed 7.5% of your AGI if you itemize your deductions.

What is the SALT deduction cap?

The state and local tax (SALT) deduction is capped at $10,000 ($5,000 if married filing separately), limiting the amount you can deduct for state and local income, sales, and property taxes.

How do I report itemized deductions on my tax return?

You report itemized deductions on Schedule A and attach it to your Form 1040 when filing your tax return.

Are charitable contributions fully deductible?

Charitable contributions are deductible up to certain limits, generally 60% of your AGI, depending on the type of donation and organization.

Can I switch between standard and itemized deductions each year?

Yes, you can choose each year whether to take the standard deduction or itemize, based on which method is more beneficial for your tax situation.

Are there limitations on mortgage interest deductions?

Interest on mortgage debt incurred after December 15, 2017, is deductible on loans up to $750,000 ($375,000 if married filing separately). For loans prior to that date, the limit is $1 million.

What records should I keep to support my itemized deductions?

Maintain receipts, statements, and documentation for all claimed expenses, such as bills, charitable donation acknowledgments, and property tax statements, in case of an IRS audit.