Standard vs Itemized Deduction 2026

The Break-Even Rule

The math is simple: itemize when your itemizable deductions exceed your standard deduction. Take the standard deduction when they don't.

You do not “choose” which produces a better outcome after the fact — you claim whichever is higher. The IRS lets you switch every year. There is no penalty for alternating.

2026 standard deduction amounts (per Rev. Proc. 2025-32 §3.21):

Itemizable Deductions — What Counts in 2026

State and Local Taxes (SALT) — IRC §164, as amended by OBBB §70120

• State and local income taxes (or sales taxes, if elected)
• Real property taxes (personal residence)
• Personal property taxes (vehicle registration fees based on value)
• 2026 Cap: $40,400 MFJ / $20,200 single (raised from $10,000 under OBBB; phase-down above $500k/$250k MAGI)

Mortgage Interest — IRC §163(h)

• Interest on acquisition debt up to $750,000 (for loans originated after December 15, 2017, per TCJA)
• Loans originated before that date are grandfathered under the prior $1 million cap
• Home equity loan interest deductible only if proceeds used to buy, build, or substantially improve the home

Charitable Contributions — IRC §170

• Cash contributions: up to 60% of AGI for qualified public charities
• Capital gain property: up to 30% of AGI (deduct fair market value)
• Non-cash contributions above $500 require Form 8283
• Qualified charitable distributions (QCDs) from IRAs are not reported here — they're excluded from income directly

Medical Expenses — IRC §213

• Only the portion exceeding 7.5% of AGI
• Includes insurance premiums (not employer-paid), prescription drugs, dental, vision, and qualifying long-term care costs
• The 7.5% floor makes this deduction available primarily to filers with high medical costs or lower AGI

Casualty and Theft Losses — IRC §165

• Post-TCJA, only losses from federally declared disasters qualify
• Must exceed 10% of AGI (after $100 per event floor)
• Rarely material for most filers

Three Example Scenarios

Texas Single Filer, $85,000 — Standard Wins Easily

Income: $85,000 W-2, standard deduction, no mortgage (rents). Standard deduction: $16,100

• SALT: ~$3,000 (property tax only; Texas has no state income tax)
• Mortgage interest: $0 (renting)
• Charitable: $1,500
• Total itemized: $4,500 — less than one-third of the standard deduction.

Decision: Standard deduction. No contest.This is why ~90% of filers don't itemize.

California MFJ, $250,000 — Itemize Wins

Income: $250,000 combined wages, MFJ. Standard deduction: $32,200

• California state income tax: ~$16,200 (approx. 6.5% effective on $250k MFJ)
• Property tax on $900k CA home: ~$10,000
• Combined SALT: $26,200 (under $40,400 OBBB cap)
• Mortgage interest (year 3, $700k loan at 6.5%): ~$43,500
• Charitable: $6,000
• Total itemized: $75,700

Decision: Itemize. Wins by $43,500 over standard deduction. At the 22% marginal rate, the extra $43,500 in deductions saves approximately $9,570 in federal income tax.

Senior Couple, High Medical — Standard Still Wins

Profile: MFJ couple, both 65+, $95,000 income. One spouse has significant medical expenses. Standard deduction: $32,200 + $3,200 (IRC §63(f) both 65+) = $35,400

• SALT: $8,000 (property tax, retired, no state income tax)
• Mortgage interest: $6,000 (nearly paid off)
• Medical expenses: $22,000 (subtract 7.5% of $95,000 = $7,125 floor → deductible: $14,875)
• Charitable: $4,000
• Total itemized: $32,875

Decision: Standard deduction wins at $35,400 vs $32,875.Even with significant medical expenses, the senior couple's standard deduction (boosted by IRC §63(f) additions) is higher. Note: the OBBB senior deduction is an above-the-line deduction and does not affect this standard vs itemized comparison — it applies regardless.

Break-even table — what's needed to beat the standard deduction:

State Income Tax Considerations

Most states that have an income tax use federal taxable income as a starting point. However, some states:

• Require you to itemize federally if you itemize on the state return (and vice versa) — check your state's rules
• Have their own standard deduction amounts that differ from the federal standard deduction
• Don't allow the SALT deduction on the state return (logical — you can't deduct state taxes paid to reduce state taxes owed to that same state)
• Conform to or deviate from TCJA/OBBB — some states have not conformed to the OBBB SALT cap changes

Bunching Strategy — Alternating Itemize/Standard Years

If your itemizable deductions normally fall just below the standard deduction threshold, consider bunching two years of deductible expenses into one year (itemize that year) and taking the standard deduction the next.

Classic use case: charitable giving

Instead of donating $8,000/year to charity (which, combined with $20,000 SALT and $5,000 mortgage interest = $33,000, just barely above $32,200 MFJ standard deduction), donate $16,000 in year 1 (itemize: $16,000 + $20,000 + $5,000 = $41,000 — $8,800 above standard) and donate nothing in year 2 (take standard deduction).

Two-year total deduction: $41,000 + $32,200 = $73,200 vs. $66,400 if splitting evenly. At 22%, the bunching saves about $1,716 in federal taxes over two years.

Donor-advised funds (DAFs) are the most practical tool for this: you contribute a large amount in year 1 (full deduction), then distribute from the DAF to charities over subsequent years at your own pace.

Frequently Asked Questions

See Which Is Better for You with the SALT Deduction Calculator

The three scenarios above cover common situations but not yours specifically. The SALT deduction calculator computes your specific SALT deduction under the 2026 OBBB cap. The 2026 federal income tax calculator shows your total bill under either deduction method. For mortgage interest specifically, the mortgage interest deduction calculator helps assess whether itemizing clears the bar.