Schedule A Itemized Deductions: The Complete 2026 Guide to Paying Less Tax

Here's a question almost every taxpayer gets wrong: should you take the standard deduction or itemize on Schedule A? For most of the last eight years, the answer was easy—take the standard deduction and move on. But 2026 changes the math dramatically. With the SALT cap jumping from $10,000 to over $40,000, itemizing just became worth it again for millions of homeowners, high earners in blue states, and people with big medical bills.

If you haven't looked at Schedule A since the Tax Cuts and Jobs Act made it mostly irrelevant, it's time to take another look. Skipping it could cost you thousands of dollars.

What Is Schedule A?

Schedule A is the form you attach to Form 1040 to list your itemized deductions. Instead of taking the flat standard deduction the IRS gives everyone, you list each individual deduction you qualify for and add them up. If the total beats the standard deduction, you use Schedule A and pay less tax.

Think of it as a choice between two menus:

• Standard deduction menu: one flat amount, no questions asked, no receipts needed
• Schedule A menu: add up every qualifying expense, keep records, and deduct whatever you can prove

You pick whichever gives you the bigger number. Simple in theory—mechanical in practice.

Standard Deduction vs. Itemizing: The 2026 Numbers

Before you even think about Schedule A, you need to know what you're trying to beat. For tax year 2026:

Filing Status	Standard Deduction
Single or Married Filing Separately	$16,100
Married Filing Jointly or Qualifying Surviving Spouse	$32,200
Head of Household	$24,150

If your total itemized deductions don't clear those thresholds, don't bother with Schedule A. If they do, itemizing saves you money.

The challenge under the old SALT cap was that most middle-income homeowners couldn't get over the standard deduction anymore. Their state and local taxes were capped at $10,000, and adding mortgage interest and some charitable contributions often wasn't enough. That changed in 2026.

The Big 2026 Change: SALT Cap Jumps to $40,400

For tax years 2026 through 2029, the state and local tax (SALT) deduction cap rises from $10,000 to $40,400 (up 1% each year during that window). This is the single biggest shift in itemized deduction rules in nearly a decade.

Who benefits most:

• Homeowners in high-tax states (California, New York, New Jersey, Illinois, Massachusetts)
• High earners paying large state income taxes
• People with significant property tax bills

A phase-out applies if your modified adjusted gross income exceeds $505,000 ($252,500 if married filing separately). Above that threshold, the cap is reduced by 30 cents for every dollar of income over the limit, until it hits the $10,000 floor.

After 2029, the cap reverts back to $10,000 unless Congress extends it. So if itemizing makes sense for you now, enjoy it while it lasts.

What You Can Deduct on Schedule A

Schedule A breaks down into six main categories. Here's what each one covers.

1. Medical and Dental Expenses (Lines 1–4)

You can deduct unreimbursed medical and dental expenses only to the extent they exceed 7.5% of your adjusted gross income (AGI).

Example: Your AGI is $80,000. The 7.5% threshold is $6,000. If you paid $10,000 in qualifying medical expenses, only $4,000 is deductible.

Qualifying expenses include:

• Doctor, dentist, and specialist fees
• Prescription medications and insulin
• Hospital and surgery costs
• Medical equipment (wheelchairs, hearing aids, glasses, contacts)
• Long-term care insurance premiums (with age-based limits)
• Transportation costs to medical appointments (at a per-mile rate)
• Qualifying home modifications for medical reasons

What doesn't qualify: cosmetic procedures, over-the-counter drugs without a prescription (except insulin), gym memberships, and anything your insurance reimbursed.

Pro tip: If you're close to the 7.5% threshold, consider "bunching"—scheduling elective procedures, filling long-term prescriptions, or buying needed medical equipment all in the same tax year so your expenses clear the floor.

2. Taxes You Paid (Lines 5–7)

This is where the new $40,400 SALT cap applies. You can deduct:

• State and local income taxes OR state and local sales taxes (pick whichever is higher—you can't deduct both)
• Real estate property taxes on your primary and secondary homes
• Personal property taxes (like annual vehicle registration fees based on value)

The $40,400 cap applies to the combined total. If your state income tax alone is $30,000 and your property tax is $15,000, you can only deduct $40,400, not $45,000.

Sales tax strategy: If you live in a state with no income tax (Texas, Florida, Washington, etc.), choose the sales tax deduction. The IRS provides an optional sales tax table or you can use actual receipts if you kept them. Add sales tax on big-ticket purchases (cars, boats, home renovations) on top of the table amount.

3. Home Mortgage Interest (Lines 8–10)

Mortgage interest is deductible on loans up to:

• $750,000 for mortgages taken out after December 15, 2017 (this cap is now permanent)
• $1,000,000 for mortgages taken out before December 16, 2017 (grandfathered)
• Halve those amounts if married filing separately

You can deduct interest on your primary home and one secondary residence. Your lender sends you Form 1098 each January showing how much mortgage interest you paid—that's the starting point for this line.

Also deductible here:

• Points paid on a new home purchase (can be deducted immediately)
• Points paid on refinancing (must be deducted over the life of the loan)
• Private mortgage insurance (PMI) premiums, in some years—check current rules

What's not deductible: interest on a home equity loan used for personal expenses (only qualifies if the loan was used to buy, build, or substantially improve the home securing the loan).

4. Gifts to Charity (Lines 11–14)

Charitable contributions to qualified organizations are deductible, but 2026 introduces a major new limitation: you must first exceed 0.5% of your AGI before any charitable contributions become deductible.

Example: Your AGI is $100,000. The first $500 of charitable contributions isn't deductible. If you gave $3,000, only $2,500 counts.

Deduction categories:

• Cash contributions: generally limited to 60% of AGI
• Non-cash contributions (clothes, household goods, stocks): valued at fair market value; limits of 20%, 30%, or 50% of AGI depending on what you gave and to whom
• Mileage driven for charitable work: deductible at the charitable mileage rate

Required documentation:

• Any contribution of $250 or more needs a written acknowledgment from the charity
• Non-cash contributions over $500 require Form 8283
• Non-cash contributions over $5,000 usually require a qualified appraisal

For high earners: If you're in the top 37% tax bracket, the value of your itemized deductions is now capped at 35%. Plan accordingly.

5. Casualty and Theft Losses (Line 15)

You can only deduct personal casualty losses if they were caused by a federally declared disaster. Each loss must exceed $100, and total losses must exceed 10% of your AGI to be deductible.

This is a narrow deduction. Normal theft, accidents, or non-disaster damage doesn't qualify. If a hurricane, wildfire, or flood hit your area and the president declared it a federal disaster, you may qualify—otherwise, probably not.

6. Other Itemized Deductions (Line 16)

The leftover category covers:

• Gambling losses (only up to the amount of gambling winnings reported as income)
• Impairment-related work expenses for disabled employees
• Federal estate tax on income in respect of a decedent
• Certain repaid income under a claim-of-right doctrine

Miscellaneous deductions subject to the 2% AGI floor (unreimbursed employee expenses, tax prep fees, investment expenses) were eliminated by the TCJA and remain gone.

Should You Itemize? A Quick Decision Framework

Run these numbers before you commit:

1. Start with the SALT number. Add up your state income tax (or sales tax), property tax, and personal property tax, capped at $40,400.
2. Add mortgage interest. Grab the number from your Form 1098.
3. Add medical expenses over 7.5% of AGI, if any.
4. Add charitable contributions over 0.5% of AGI.
5. Compare the total to your standard deduction. If itemizing is bigger, file Schedule A.

For many homeowners in high-tax states with mortgages, this will be an easy win in 2026. For renters without big medical bills or charitable gifts, the standard deduction still likely wins.

Five Common Schedule A Mistakes

Even when itemizing makes sense, mistakes are easy to make. Here are the big ones:

1. Double-Dipping Deductions

You can't deduct medical expenses paid from an HSA or FSA—those accounts already gave you a tax break. Likewise, you can't deduct mortgage interest that was paid with subsidized funds, or charitable contributions reimbursed by your employer.

2. Choosing the Wrong Tax Deduction

You have to choose between state income tax and state sales tax on Line 5a—you can't deduct both. Taxpayers in no-income-tax states who default to income tax are leaving real money on the table.

3. Miscounting Mortgage Interest

If your mortgage exceeds the $750,000 (or $1,000,000 grandfathered) limit, only a prorated share of interest is deductible. Many homeowners in expensive markets miss this and overstate their deduction.

4. Skipping Charity Documentation

No receipt, no deduction—no matter how honest you are. The IRS is particular about substantiation rules, especially for contributions of $250 or more.

5. Forgetting to Compare to Standard

Filing Schedule A when the standard deduction would be higher just creates extra work and audit exposure for zero benefit. Always run both numbers.

What the OBBB Changed for 2026 and Beyond

The One Big Beautiful Bill (OBBB) made several key changes that took effect in 2026:

• SALT cap raised to $40,400 (expires after 2029)
• Mortgage interest $750,000 cap made permanent (no longer scheduled to revert to $1 million)
• New 0.5% AGI floor for charitable contributions (even if you itemize)
• 35% cap on deduction value for 37% bracket taxpayers (a new limitation for top earners)
• Pease limitation remains eliminated (previously phased out deductions for high-income filers)

These changes make 2026–2029 a unique window. If you've been taking the standard deduction by default, re-run the math this year. The game has changed.

Recordkeeping: The Part Nobody Likes

Every itemized deduction needs proof. The IRS generally has three years to audit your return (longer in some cases), so keep records for at least that long. Practical approach:

• Medical: Keep every EOB, receipt, and prescription invoice. Track mileage in a log.
• Taxes: Save W-2s (box 17 for state tax), property tax bills, vehicle registration receipts.
• Mortgage: Hold onto Form 1098 and closing statements.
• Charity: Keep written acknowledgments for every gift of $250+, plus canceled checks or credit card statements for smaller donations.
• Disaster losses: Document the property's fair market value before and after, insurance reimbursements, and any federal disaster declaration.

Digitize everything. Scan receipts as you get them. A pile of paper in a shoebox is a pile of deductions you won't be able to prove when it matters.

Keep Your Finances Organized from Day One

Itemizing only works if your records hold up. Whether you're tracking medical expenses, property taxes, or charitable gifts across the year, good bookkeeping is what turns scattered receipts into real tax savings. Beancount.io offers plain-text accounting that gives you complete transparency and control over your financial data—ideal for anyone who wants to track deductible expenses as they happen, not scramble through a shoebox every April. Get started for free and see why developers and finance professionals prefer plain-text accounting for their personal and business books.