Doing your own return or paying someone, and the point where the fee stops mattering

The comparison people run is the preparer's fee against zero. That is the wrong pair. The real comparison is the fee against the tax difference plus the hours, and the tax difference is the part nobody can see until the return is done.

Here is how the two options actually stack up, and the conditions under which each one wins.

Where filing yourself wins outright

A return built from a W-2, standard deduction, maybe some bank interest, has one defensible answer. There is nothing to optimize. Software walks the same path a preparer would walk, and the free filing options published on the IRS site cover a substantial share of households at no cost at all.

Signals that you are in this group:

• All income arrives on forms that also go to the IRS.
• You take the standard deduction and it is not close.
• No rental property, no business, no equity compensation, no state line crossed during the year.
• Nothing changed. Same job, same house, same family.

Paying several hundred dollars to have someone retype those forms buys you an hour of your Saturday back. That is a fine thing to buy, but call it what it is.

Where a preparer earns the fee in a single line

The value of a preparer is concentrated, not spread evenly. It sits in a handful of judgment calls, and one of them can be worth more than a decade of fees.

• The year you sold something. A house, a business, a large block of stock, an inherited asset. Basis is where the money is, and basis is where amateurs guess.
• The first year of self-employment. Quarterly estimates, self-employment tax, the home office method, vehicle records, whether to elect anything. Getting this set up correctly once pays for several years.
• Two states in one year. Part-year residency, credits for tax paid to the other state, and different rules about what each state even taxes.
• A letter arrived. Once the IRS has written to you, the question is no longer how to file. It is how to respond, and the response is a different skill.
• A messy prior year. An amended return or a missed election is worth a professional's time, because the fix has a deadline attached.

The middle ground, where it is genuinely close

A side business with clean books, or one rental with a straightforward mortgage and no improvements this year, sits between the two. Both approaches produce a defensible return. Three questions settle it.

1. Is anything ambiguous? If you have a question you cannot resolve in twenty minutes of reading, you are paying for an answer, not for data entry.
2. How good are the records? Good records make either option cheap. Bad records make the preparer expensive, because you are paying professional rates for bookkeeping.
3. What is your own hour worth, honestly? Not your billing rate. What you would actually otherwise do with the time.

What people get wrong in both directions

Two failures show up repeatedly, and they are mirror images.

The first is invented expenses. Personal costs recategorized as business ones, a car used mostly for errands claimed at full business use, meals with no business purpose written down anywhere. These are not aggressive positions. They are wrong, and they are the reason the return got looked at.

The second is missed ones. Health insurance premiums for the self-employed, the deductible half of self-employment tax, mileage that was never logged, home office space that plainly qualified, retirement contributions still available after year end. These are quiet and they are large, and no software prompt catches what you never entered.

A preparer worth their fee finds the second category. The first category is the reason to choose one carefully.

What to hand over, either way

The same file serves both routes. Income forms in one folder. A twelve-line spreadsheet of business income and expense categories, updated monthly. Closing statements for anything bought or sold. Last year's return. Receipts for anything unusual, scanned rather than shoeboxed.

Assembled that way, a self-filed return takes an evening and a prepared one costs at the low end of the quoted range, because you are not paying anyone to sort paper.

The fee is only expensive relative to what it replaces. Against a lost deduction or a botched basis calculation, it is not the number that matters.