Internal Revenue Service (IRS) · United States

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Schedule A (Form 1040), Itemized Deductions

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JustFill only helps you fill the Schedule A PDF in your browser; it does not file your return or e-file with the IRS, and it is not a tax-advice or tax-preparation service — you attach the completed schedule to your Form 1040 and submit it yourself.JustFill is not affiliated with Internal Revenue Service (IRS). This is an independent third-party tool to help you complete Schedule A. Always download the current blank form from the official source and verify your completed copy before signing or submitting. Official Schedule A from Internal Revenue Service (IRS)

Quick answer

Schedule A (Form 1040), "Itemized Deductions," is an IRS attachment individuals file with their Form 1040 to claim itemized deductions — such as medical costs, state and local taxes, mortgage interest, and charitable gifts — instead of the standard deduction. It's used by taxpayers whose deductible expenses exceed their standard deduction. JustFill makes the official Schedule A PDF fillable in your browser for free.

Form
Schedule A
Issued by
Internal Revenue Service (IRS)
Country
United States
Cost to fill
Free

What is Schedule A?

Schedule A (Form 1040) is the IRS form individuals use to itemize deductions instead of taking the standard deduction. Officially titled "Itemized Deductions," it attaches to your annual Form 1040 (or 1040-SR) and groups your deductible expenses into categories: medical and dental costs above the 7.5%-of-AGI floor, state and local income or sales taxes plus real estate and personal property taxes (limited by the $10,000 SALT cap), home mortgage interest and points, gifts to charity, casualty and theft losses from federally declared disasters, and certain other deductions. The categories are totaled on Line 17, which carries to your Form 1040. You generally itemize only when your total deductions exceed the standard deduction for your filing status. With JustFill you can fill the official Schedule A PDF online for free — the AI detects each line so you can type or dictate your figures, it works on scanned copies, and you never need Adobe Acrobat.

Who fills out Schedule A?

  • Homeowners whose mortgage interest and property taxes, combined with other deductions, exceed their standard deduction.
  • Taxpayers who paid large medical and dental expenses above the 7.5%-of-AGI threshold in the tax year.
  • People who made substantial charitable contributions of cash or property they want to deduct.
  • Residents of high-tax states claiming state and local income, sales, real estate, or personal property taxes (up to the SALT cap).
  • Anyone whose total itemizable deductions are greater than the standard deduction for their filing status.

Field-by-field breakdown

What each section of Schedule A asks for. JustFill’s AI will detect these fields automatically when you upload the PDF — review the breakdown below so you know what to enter.

Medical and Dental Expenses (Lines 1–4)

Total unreimbursed medical and dental costs (Line 1), then subtract 7.5% of the AGI you enter on Line 2; only the excess on Line 4 is deductible.

Taxes You Paid (Lines 5–7)

State and local income or general sales taxes (5a), real estate taxes (5b), and personal property taxes (5c), with the combined 5a–5c total capped at $10,000 ($5,000 if married filing separately) on Line 5e.

Interest You Paid (Lines 8–10)

Home mortgage interest and points reported on Form 1098 (Line 8a), home mortgage interest not reported on a 1098 (Line 8b), points not reported on a 1098 (Line 8c), and investment interest from Form 4952 (Line 9), totaled on Line 10.

Gifts to Charity (Lines 11–14)

Cash contributions (Line 11), gifts of property — with Form 8283 required if over $500 (Line 12), and any carryover from a prior year (Line 13), totaled on Line 14.

Casualty and Theft Losses (Line 15)

Losses from a federally declared disaster, figured on Form 4684; ordinary casualty and theft losses are not deductible here for 2018–2025.

Other Itemized Deductions (Line 16)

A short list of remaining allowable deductions (such as gambling losses or certain estate taxes), with the type and amount written in.

Total Itemized Deductions (Line 17)

The sum of all the above categories; this figure carries to Line 12 of Form 1040 or 1040-SR in place of the standard deduction.

Common mistakes to avoid

  • 1Itemizing when the standard deduction would actually be larger — only file Schedule A if your total on Line 17 exceeds the standard deduction for your filing status.
  • 2Forgetting the $10,000 SALT cap and entering the full state, local, and property tax amount on Line 5e instead of the limited figure ($5,000 if married filing separately).
  • 3Deducting medical expenses below the 7.5%-of-AGI floor, or claiming an ordinary casualty or theft loss that wasn't from a federally declared disaster, which isn't deductible for 2018–2025.

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Frequently asked questions

Yes. Schedule A (Form 1040) is a free public-domain IRS form, and JustFill lets you fill it online for free — upload the PDF, let the AI detect the lines, type or dictate your figures, and download the completed form with no charge to fill and download it.
Download the latest Schedule A PDF and its instructions directly from the IRS at irs.gov/forms-pubs/about-schedule-a-form-1040. Then upload that PDF to JustFill to complete it in your browser on your computer or phone — no printing or software install needed.
Yes. JustFill is a browser-based filler that works on the official Schedule A PDF, including scanned or non-fillable copies. Its AI auto-detects each line so you can type or dictate your medical, tax, mortgage, and charitable figures, then download a clean, completed PDF — no Adobe Acrobat required.
Itemize only if your total deductions on Schedule A exceed the standard deduction for your filing status; otherwise the standard deduction saves you more and less paperwork. JustFill helps you fill Schedule A so you can total your deductions and compare — but it doesn't give tax advice or decide for you.

Official source: Schedule A on Internal Revenue Service (IRS)’s website

JustFill is an independent product and is not affiliated with, endorsed by, or sponsored by Internal Revenue Service (IRS) or any government agency. Always verify your completed form on the official version before signing or submitting.