The best expense tracking app for self-employed people is one that handles the three things a salaried person never deals with: purchases that are partly personal and partly business, driving for work, and year-to-date category totals you'll want four times a year when quarterly estimated taxes come due. For most solo earners that means a low-cost bookkeeping app, not a full accounting suite. PennyBot costs $5 or $15 a month, QuickBooks Solopreneur is $20, and Wave is free but has no mileage tracking. Pick the one that splits a mixed purchase and prices a trip without a spreadsheet on the side.

Last updated: November 2026

The part most self-employed people miss

Everyone knows they should track business expenses. Few people think about which transactions are actually hard to track. The obvious ones sort themselves: a software subscription is business, groceries aren't.

The trouble is the purchase in the middle. Your phone bill covers client calls and calls home. A single store run picks up printer paper and dinner. A trip to see a client turns into two extra days with family. If your app only allows one category per transaction, every one of these forces a bad choice: call the whole thing business and overstate it, or call it personal and lose the business share entirely.

Salaried people rarely have to make that call. Self-employed people make it every week, so if last year's records drifted, the app deserves some of the blame. Before comparing prices, check whether an app can split one transaction across categories. It sounds like a small feature. For a one-person business, it's the feature.

Three jobs your app has to do

Split a mixed purchase. One charge, two or more categories, with the business part and the personal part kept apart. How to work out the business share of something like a phone bill is a question for your tax professional; the app's job is to record the split once you know it.

Price your business trips. Driving to clients, suppliers or job sites adds up, and the IRS standard mileage rate changes over time. An app that prices each trip at the rate for the date you drove saves you from redoing the math every time the rate moves. For the rules on what counts as a business mile, see mileage tracking for self-employed.

Give you year-to-date totals on demand. Quarterly estimated payments mean you look at your numbers in April, June, September and January, not just once a year. An app that groups year-to-date expenses by category turns each of those check-ins into a quick review instead of a rebuild.

Six options compared

Prices change, so check each site before you buy.

App Price Good at Watch out for
PennyBot $5 or $15 a month Works inside the AI you already use; split transactions; mileage at the IRS rate for each trip's date Doesn't connect to your bank itself; no invoicing
QuickBooks Solopreneur $20 a month Industry standard, bank connection, tax tools, works with accountants Complex for simple needs; AI chat capped at 25 questions a month
Wave Free (payments 2.9%+) Free core product, decent invoicing No mileage tracking
FreshBooks $17 a month and up Invoicing, time tracking, client portal Expensive for basic tracking; its AI is a read-only Claude connector that can't categorize
Xero $27 a month and up Strong accounting, multi-currency, JAX AI chat Steep learning curve; not designed for freelancers
Copilot Money $13 a month or $95 a year Clean design, bank sync, net worth tracking No business features; no Android app

A full accounting suite is the wrong default for a one-person business. Xero and QuickBooks are capable products, but most of what you'd pay for (multi-currency, deep accounting setup) sits unused when the job is "sort my spending and log my drives." At the other end, a personal-finance app like Copilot Money is tempting because it looks good, but it has no business features, so you'd be back in a spreadsheet the first time you need a deductible-category total.

If invoicing fills most of your week, Wave or FreshBooks may be the better hub, with a separate tracker for expenses. That's a fair setup.

How PennyBot handles the self-employed version

PennyBot is a bookkeeping app you sign in to from ChatGPT, Claude, Gemini, Grok or Perplexity, then use in plain English.

Getting transactions in. PennyBot doesn't connect to your bank itself. In the US, you can link your bank in ChatGPT (its Finances feature) or Grok, connect PennyBot to that AI by signing in, and ask it to record your transactions in PennyBot. PennyBot never sees your bank login, and nothing comes in until you ask. You can also import a CSV from your bank, enter transactions by hand, or, on Professional, upload a bank-statement PDF.

Sorting them. Your own categorization rules apply first (for example, "anything from this merchant is Software"), and you set them by asking your connected AI. Next comes merchant memory: correct a merchant once and PennyBot files it that way next time. Anything still unknown goes to AI, which only assigns a category when it's at least 70% confident. You can see why a category was picked, add notes, and undo any change.

Mixed purchases. Transaction split lets you divide one charge across several categories, which is exactly what the phone bill and the store run need.

Trips. You log each business trip, Google Maps calculates the distance, and PennyBot prices it at the IRS standard mileage rate for the date you drove. It doesn't record trips by itself; there's no automatic GPS tracking, and the iPhone and Android apps aren't released yet. If you're weighing dedicated trip trackers, the best mileage tracking app for tax deductions compares them.

Receipts. Upload a receipt photo along with the details you type in, then link it to a transaction or record it as a cash expense. Or ask your connected AI to read the receipt and send PennyBot the details. PennyBot itself doesn't read receipt images. Receipts are kept until you delete them.

Year-to-date totals. The Deductible-Category Report groups year-to-date expenses by category, adds business mileage at the rate for each trip's date, and includes a 1099 vendor summary. Whether a given expense is deductible depends on your situation, so confirm with a tax professional. You can also ask, "What have I made after expenses this year?" in PennyBot's chat or from your connected AI.

If you already use accounting software. PennyBot connects to QuickBooks, Xero and Wave. Category changes sync back to QuickBooks and Xero every few minutes; Wave is import only.

Where it falls short

PennyBot doesn't send invoices, so if you bill clients you'll still need an invoicing tool; client payments show up as income once those transactions are in your books. There's no phone app yet, so trips get logged after the fact. And it won't tell you how much to set aside for taxes. That depends on your whole situation, and it's a conversation for a CPA or Enrolled Agent.

A quarterly habit that keeps it honest

Each time an estimated payment comes due, run the same short check:

  1. Clear anything still uncategorized. PennyBot can email you a daily or weekly reminder about these.
  2. Split any mixed purchases you skipped.
  3. Make sure the quarter's business trips are logged.
  4. Pull the year-to-date category totals and take them to whoever handles your estimate.

Not exciting. But four short reviews beat rebuilding twelve months of spending in March. For a broader look at choosing a tracker with tax time in mind, see the best expense tracking app for tax deductions.

PennyBot has two monthly plans, Essentials at $5 and Professional at $15, and both come with a 7-day free trial for website signups. You enter a card at signup and it isn't charged during the trial; cancel in Settings → Billing before the trial ends and you won't pay anything. Plan details are on the pricing page.

Frequently asked questions

What is the best expense tracking app for self-employed people?

It's the one that can split a purchase that's part personal and part business, price business trips at the IRS mileage rate, and give you year-to-date totals by category. For a one-person business, a low-cost bookkeeping app usually fits better than a full accounting suite. Compare prices and features on each provider's site, since plans change.

Can an expense tracking app handle purchases that are partly personal?

Some can. Look for a transaction split feature, which divides one charge across several categories. PennyBot has one, so a single phone bill or store run can carry a business part and a personal part. How you work out the business share is a question for your tax professional.

Does PennyBot connect to my bank?

No, not by itself. In the US, you can link your bank in ChatGPT (Finances) or Grok, connect PennyBot to that AI by signing in, and ask it to record your transactions. PennyBot never sees your bank login. You can also import a CSV file, or upload a bank-statement PDF on the Professional plan.

Is there a free trial?

Yes. Both PennyBot plans, Essentials at $5 a month and Professional at $15 a month, come with a 7-day free trial for website signups, one per person. You enter a card, and it isn't charged during the trial. Cancel in Settings → Billing before it ends and you won't be charged; otherwise it renews monthly.

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