Bookkeeper or accountant taxes and deductions

You will do this correctly for clients and badly for yourself. The licensing fees an EA or CPA pays are deductible professional expenses and are the line most often left off an own-business return.

The same rule that hits therapists hits you: the 20% deduction for business profit is withdrawn above an income threshold for work whose main asset is the skill of the person doing it, and accounting counts. Professional indemnity cover and EA or CPA licensing are both ordinary expenses, and the software you resell to clients is income to you before it is a deduction.

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:

Continuing professional education: Hours required to keep a license you already hold are the clearest case there is. Spending on continuing professional education to stay current is deductible; the training that qualified you to start is not. The test is about where you are, not what the course teaches, which is why the identical enrollment fee can be deductible for you and not for the person sitting beside you.
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.
Phone: You get the business-use percentage of the bill, not the bill. Business-use percentage of total cost. A line you also use personally is a split, and the split needs to be defensible rather than round.
Internet, at the business-use percentage: You get the business-use percentage of the bill, not the bill. Business-use percentage of total cost. A line you also use personally is a split, and the split needs to be defensible rather than round.

The rest of the bookkeeper or accountant deduction list

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

QuickBooks or Xero
Errors and omissions insurance
Professional memberships

Worth knowing

CPAs and EAs (Enrolled Agents) have additional licensing fees deductible as professional expenses.

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.

What these words mean

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.

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.