By Jason Cook · Updated May 2026
Not tax advice. Specific tax decisions depend on your situation. Use this as a recordkeeping starting point and verify anything that affects your return with a credentialed tax professional.
The most expensive thing you can hand your accountant in February is a shoebox. Every hour they spend sorting receipts, reconciling categories, and asking you "what was this $487 charge in May?" is an hour they bill you for — and worse, it's an hour where deductions go missing because nobody can reconstruct the context months later.
Good year-round records aren't about making yourself into a bookkeeper. They're about making sure that when tax time arrives, the people who need the data — you, your CPA, or both — can answer two questions in seconds: what happened and where's the proof.
My Dad handled everything. He explained to me what deductions are and how to use them. Back then, I wasn't a tax preparer or accountant; I'm a computer technician (a nerd, if you must). My brother Stephen took over the tax preparation business after my father passed away. Stephen and I would get into arguments about taxes and deductions. I didn't understand.
When Stephen passed away and I took over the tax preparation business and started doing my own taxes, I finally understood. How? I'd feed Schedule C publications into AI and ask questions. And I realized: my Dad and my brother are the smartest people on earth.
If your records cover these four things and they're up to date within a week or two, you're in good shape:
Every dollar that comes in, with a date, the source, and what it was for. For most sole proprietors this means client invoices paid; for farmers it might be livestock sales, crop sales, or government program payments. The mistake I see most often is treating bank deposits as the source of truth — your bank statement tells you money landed, but not what it was. Capture the income at the moment of the sale, not at the moment of the deposit.
Every dollar that goes out, with a date, vendor, amount, and which category it falls under. The category matters because at tax time it maps directly to a Schedule C or F line. Travel, meals, supplies, vehicle expenses, advertising, professional fees, insurance — these are line items on your return, not just folders. Pick a set of categories and stick with them. Inconsistency is the enemy: "Office Supplies" one month and "Supplies — Office" the next means a year-end report that doesn't add up.
I remember when I first categorized my expenses, I thought credit card payments were a deduction. After I completed my tax return with credit card payments listed as deductions, nothing was adding up. After studying — asking AI and reading the Schedule C publications — I realized I can't deduct credit card payments. I can deduct whatever I charged. The payment itself is just moving money; the deduction lives on the original purchase. I call myself the "two-week person" — it takes me two weeks to figure things out.
If you drive for business at all, you need a log. The IRS expects date, destination, business purpose, and miles — not just a year-end estimate. The standard mileage rate is generous enough that even modest business driving adds up to real money, but only if you have a contemporaneous record. "Contemporaneous" means logged at the time, not reconstructed from memory in March. A note on your phone the day of the trip is enough; a guess based on your calendar a year later is not.
Keep a copy of any expense over a meaningful threshold (the IRS rule is $75, but I keep almost everything because storage is free). Photos and PDFs are fine — the IRS has accepted digital receipts for years. The point of the receipt isn't bureaucracy; it's that if you ever need to defend a deduction, the receipt is the proof. Without it, the deduction is just a number on a spreadsheet.
You don't need to be doing books every day. What you need is a rhythm that prevents drift. Here's mine:
Most accountants don't want a giant spreadsheet with everything in it. They want a categorized report (or a clean CSV they can import) and the ability to drill into any specific transaction if they have a question. Receipts are usually only requested if there's an audit or something on the return needs justification — but having them ready is what makes the difference between a smooth return and a stressful one.
If you use Dad's Budget Tracker, the relevant outputs are: a PDF report (a categorized summary, ideal as a hand-off document), a CSV export (raw transactions, easy for an accountant to pull into their software), and a full backup ZIP (everything including receipt files). Most CPAs are happy with just the PDF; the CSV can ride along if the accountant wants to drop it into their software.
I'm my own accountant. I started with Dad's spreadsheet as the base and grew it into an in-depth system — one sheet for business expenses, another for personal expenses, another for income coming into the business. Eventually I built Dad's Budget Tracker so I wouldn't need that elaborate spreadsheet system anymore. Spreadsheets are simple. Mine had gotten complex. I'm not saying complex is bad — I just want to go back to basics.
None of this is hard. It's just consistency, and an honest hour or two a month. The reward is a tax season where you walk into your accountant's office (or open your tax software) with the answer already written down — and where every deduction you're entitled to is one you can actually prove. Stress will just fade away.
Again — this is not tax advice. The rules change, your situation is unique, and a real CPA earns their fee. Use this as a recordkeeping framework and verify anything that affects your return with a professional.