How to file taxes the first time you have anything complicated

Last April a friend called me because her tax software was asking her to enter something called a "basis" for stock she had sold, and she did not know what a basis was, and the deadline was in nine hours. She had made $340 on Robinhood. She is a paralegal. This is what "complicated" looks like from the inside — not a mansion and a yacht, just a normal person with two W-2s and an app on her phone.

Most tax advice online is written either for people whose finances fit on a postcard or for people who own rental property in three states. There is a middle zone where a lot of readers actually live, and nobody covers it well. Let's cover it.

What "complicated" actually means

Your return stops being simple the moment any of the following is true. Not "maybe true." True.

• You had more than one employer during the year, or you moved states.
• You did any freelance, contract, gig, or side-hustle work — even $200 of it.
• You sold anything on a brokerage: stocks, ETFs, crypto. Even at a loss. Especially at a loss.
• You got money from a source that is not a paycheck: interest over $10 from a savings account, dividends, unemployment, a scholarship that exceeded tuition, forgiven debt, a settlement.
• You paid student loan interest, moved for a job, contributed to an HSA, or started an IRA.
• Somebody could arguably claim you as a dependent and you are not sure.
• You had health insurance through the marketplace (the Form 1095-A trap — this one silently ruins April for a lot of people because they file without it and then have to amend).

If none of those apply, close this tab. Use the IRS Free File program if your income is under roughly $79,000 and go outside. Everything below is for the rest of you.

The thing that trips people up isn't the math. It's not knowing that a form exists. The IRS assumes you know what showed up in your life this year; it does not send you a checklist. Your job in February is to sit down and inventory what happened financially in the previous calendar year before you touch any software. Every account, every employer, every side gig, every weird envelope from a bank you forgot you had. Write it on paper. This is the step everybody skips and it is the step that matters.

The four forms you will actually meet

There are hundreds of tax forms. You will interact with maybe four of them your first complicated year. Learning their names in advance means the software stops feeling like it is speaking Klingon.

W-2. From an employer. Shows wages and the taxes they already took out. You get one per employer. If you had two jobs, you get two, and you enter both.

1099. From anyone who paid you who was not an employer. There are many flavors — 1099-NEC for freelance and contract work, 1099-INT for savings account interest, 1099-DIV for dividends, 1099-B for brokerage sales, 1099-K if a platform like Venmo or Etsy processed payments for you. They all show income that nobody withheld taxes from, which is why the return often ends with you owing money instead of getting a refund. This is not a bug in the software. This is the actual situation.

Schedule C. This is where freelance income and its associated expenses get reported. If you drove for a delivery app and made $2,000 and spent $600 on gas, Schedule C is where the $600 shows up. Keep receipts. "I think it was around six hundred" is not a number the IRS respects.

Schedule D and Form 8949. These are where stock and crypto sales go. Your brokerage will send you a 1099-B and, if you are lucky, a spreadsheet you can import directly into TurboTax or FreeTaxUSA. If you are not lucky (looking at you, certain crypto exchanges), you will be entering trades by hand, and you will learn what a cost basis is the hard way. The basis is what you paid for the thing. The sale price minus the basis is your gain or loss. That's the whole concept; it just has a bad name.

There are others — Schedule B for interest and dividends over $1,500, Schedule 1 for the miscellaneous drawer of adjustments, Form 8889 for HSAs — but the software will surface them when needed if you answered the intake questions honestly.

When to stop DIY-ing and pay somebody

Here is my heuristic. If preparing your own return would take you more than one focused Saturday, or if you are going to be up at 2 a.m. googling "wash sale rule," pay a person. A competent independent preparer or Enrolled Agent charges somewhere between $250 and $500 for a return with a Schedule C and some investment activity. That is less than the value of the Saturday plus the anxiety plus the risk of a $500 mistake.

Signs you have crossed into pay-a-person territory:

• You had freelance income over about $5,000, or freelance income in more than one state.
• You sold a house, inherited anything, or received equity compensation (RSUs, ISOs, ESPP — if these letters mean nothing to you and your paystub shows them, that is the sign).
• You got a marketplace health insurance subsidy and your income changed mid-year.
• You are behind on a prior year and need to catch up.

Do not use one of the big storefront chains for a genuinely complicated return. They train seasonal preparers in a few weeks. Look for an Enrolled Agent (that's a federal credential — search the IRS directory) or a CPA who does individual returns. Ask two questions on the phone:

"Roughly what will this cost for a return with a W-2, a Schedule C at about [your number], and some brokerage activity? And will the person preparing it be available in June if the IRS sends me a letter?"

If they can't quote a range, or if the answer to the second question is vague, call the next one on the list. A good preparer will give you a range in ninety seconds and tell you exactly who signs the return.

One more thing on this: you can file an extension. Form 4868, free, takes ten minutes, buys you until October 15. An extension is a delay on paperwork, not on payment — if you owe, you still have to estimate and pay by April 15. But if it is April 10 and you are drowning, file the extension, pay a reasonable estimate, and deal with the actual return in May when a preparer isn't underwater. This is what preparers themselves do for their own returns. It is not cheating.

Your return will not be elegant the first year. You will forget a form and get a friendly-looking letter from the IRS in September asking about $47 of dividend income, and you will pay the $47 and move on, and nothing bad will happen. Being bad at this the first time is the standard experience, not a personal failing.

This weekend, before you do anything else: open a folder on your laptop called "Taxes [year]," and drag into it every financial document that has arrived in your email or mail since January. That's it. That's the starter version. The rest is just sorting.