Writer or author taxes and deductions

An advance is income the year it lands, not the year the book earns out. And it is normally self-employment income rather than passive royalty income, because writing the book is the trade you carry on. That surprises authors who expected the royalty treatment their contract talks about.

Research travel is deductible where the trip is primarily for the book. Agent commission is deductible in full. Writers are exempt from the rule that would otherwise force you to capitalize production costs, so what you spend writing is deductible as you spend it rather than held until publication. Writing is a specified service trade, so the 20% business profit deduction is withdrawn above an income threshold.

The deductions with a rule attached

These are the lines where the answer is not simply "keep the receipt"each has a cap, a percentage or a test that decides how much of the spend you actually get:

Home office: Two methods. Simplified is $5 a square foot to a ceiling of 300 feet, $1,500, no records beyond the measurement, and no depreciation recapture when you sell the house. Actual apportions your rent or mortgage interest, utilities, insurance and repairs by floor area, usually gives more, and does bring recapture. Either way: space must be used regularly and exclusively for business. home office must be principal place of business.
Computer: Section 179 property. Deduct the whole cost in the year it goes into service rather than spreading it over the asset's life, up to $2,560,000 a year, and 100% bonus depreciation is now permanent. The catch is the business-use test: anything used more than 50% for the business qualifies, and you deduct at that percentage rather than the full price. So anything you also use at home comes off at the share that is genuinely work, not the whole invoice.

The rest of the writer or author deduction list

Ordinary and necessary business expenses, deductible in full in the year you pay them, provided they are genuinely for the business:

Research subscriptions
Professional memberships
Travel
Marketing
Professional fees
Software subscriptions

Worth knowing

Royalties and advances are taxed differently from a fee for work, and an advance is income when you receive it rather than when the book earns out.

That is what is specific to this trade. The larger deductions are the universal ones, see the full checklist.

What each deduction is worth to you

On $100,000 of profit with no state income tax, $1,000 deducted saves $305, 30.5%, because it comes off self-employment tax and income tax together:

Net profit	Saved per $1,000 deducted	Effective
$40,000	$231	23.1%
$100,000	$305	30.5%
$200,000	$297	29.7%

The last row is worth less than the one above it, and that is not a mistake: past the Social Security wage base the self-employment part of the saving drops from 15.3% to 2.9%, and the higher income-tax bracket does not quite make up the difference. A deduction is worth most in the middle.

Add a state income tax and every row rises. The 1099 calculator applies that layer.

Where this comes from

The rules on this page that are specific rather than general are cited below. Follow a link to read the provision itself rather than taking our word for it:

Qualified creative expenses of an individual are exempt from uniform capitalisation, but printing, plates and film are notIRC 263A(h)

What these words mean

Section 179: A rule letting you deduct the whole cost of equipment in the year you start using it, instead of spreading it over the years you own it.
Depreciation: Spreading the cost of something long-lasting, a vehicle, a camera, a tractor, across the years you use it, rather than deducting it all at once.
Depreciation recapture: When you sell something you had been depreciating, the tax office takes back part of the benefit by taxing the gain up to the amount you already deducted.
Specified service trade or business: Work where the main asset is the skill or reputation of the people doing it, health, law, accounting, consulting and similar. These lose the qualified business income deduction above an income threshold, where other trades keep it.

General information about how these deductions work, not tax advice. Whether a particular expense is deductible for you depends on facts this page does not have, check with a tax professional before claiming anything listed here.