Bookkeeping for Side-Hustlers
Your side income, handled properly.
For mixed-income operators whose side-business payouts, marketplace settlements, and day-job W-2 all sit in one checking account — decision-grade categorization, quarterly estimates against the payout calendar, and a monthly close that keeps the books ready for April.
Four operating pillars
What the engagement actually looks like.
Four operating commitments that distinguish a side-hustler mixed-income close from a generic DIY bookkeeping app bolted onto a checking account.
Every side-platform payout, marketplace settlement, and side-business receipt scatter-tested across personal vs. side-business lines, decided before the books close so April does not surprise the side-hustler with a hobby-income reclassification.
Published quarterly tax estimate scheduled against the side-business payout calendar so the day-job W-2 withholdings and the side-income liability both fit inside the same envelope before the next estimated-payment deadline.
Every side-platform charge, marketplace fee, and reimbursement routed decision-grade across personal vs. side-business — receipts reconciled inside the engagement window, not retrofitted from a screenshot folder at year-end.
A published monthly close over bank + side-platform + marketplace + day-job paycheck, written so the side-hustler can read it on a Sunday morning and walk into Monday knowing the books are done and the next estimate is covered.
How this differs
Side-hustler mixed-income close, instead of a generic DIY bookkeeping app.
Generic DIY bookkeeping app
Sandomenico mixed-income close
End-of-year scramble to split the side-platform payouts from the W-2 line and re-tag the year's deposits one Saturday in March.
Side-business income categorized across personal vs. business before the books close — payouts split at decision time, not at year-end.
A surprise side-business tax bill on top of a W-2 already maxed at withholding, owed during the same week the side-hustler is paying last quarter.
Quarterly estimate published against the day-job withholdings so the side-business liability fits inside the same envelope.
Receipts screenshot'd into a folder and re-tagged every April from memory and bank statements.
Every side-platform charge and reimbursement reconciled inside the engagement window — receipts decision-grade on arrival.
Month-end panic the weekend before the books were officially due — closed whenever somebody had time.
Monthly close shipped on a published cadence the side-hustler can plan around — no surprises, no rolling close.
A CSV pasted into a spreadsheet the night before close by whoever was awake and caffeine-tolerant.
Senior reviews every AI-assisted categorization patch before close — the books are decision-grade, not autocategorized.
Monthly deliverables
Five recurring artifacts, every engagement.
The same five artifacts ship every month against the published scope — no separate invoice for the quarterly estimate pack or the year-end Schedule C prep.
Categorization matrix (personal vs. side-business)
Quarterly tax-estimate pack
Receipts / expense audit
Monthly close across every stream
Year-end Schedule C prep
Monthly cadence — five recurring artifacts a mixed-income bookkeeping engagement receives, no extra invoices layered on top of the published scope.
Social proof
What a side-hustler mixed-income engagement actually feels like.
Four part-time operators on the receiving end of a bookkeeping-for-side-hustlers engagement — one in their own words per pillar.
“The marketplace payouts, the rideshare settlements, and the day-job W-2 already land split between personal and side-business before the books close — April is not a re-tag weekend.”
Margot Ellsworth — rideshare + Etsy
“The published estimate folds W-2 withholdings and side-business liability into the same envelope before the IRS deadline — no separate spreadsheet, no April scramble.”
Renaldo Pace — 1099 contractor + weekend LLC
“Charges and reimbursements reconcile inside the engagement window, not retrofitted from a screenshot folder the night before the books are due.”
Priya Iyengar — rideshare + Etsy
“The monthly close arrives Sunday-readable and ships before the next estimate is due — no four-exports-and-a-spreadsheet the morning of the deadline.”
August Kartoun — 1099 contractor + weekend LLC
Flat-retainer bookkeeping for mixed-income operators
Common questions a side-hustler asks before signing.
The four decisions a part-time earner makes before signing a bookkeeping engagement — and why the solo-direct flat-retainer model answers each one without a DIY app or hourly-billing firm in the loop.
Why a flat monthly retainer for a part-time earner — not hourly or per-transaction?
Hourly billing rewards the firm for taking longer and penalises a side-hustler every time the books grow with a new income stream. The flat monthly retainer is written down against a written scope before kickoff — mixed W-2 payroll, side-platform payouts, marketplace settlements, and quarterly estimates all sit inside one quoted number. The only thing that moves the price is a written scope change, also written down before any additional work begins. That structure is what lets a part-time earner plan the month without a variable invoice arriving on top of a tax-estimate payment.
How is solo-direct bookkeeping different from a DIY app like Wave or QuickBooks Self-Employed?
A DIY app autocategorises transactions against a generic chart of accounts and leaves the side-hustler to decide whether a platform payout is Schedule C income, a reimbursement, or a personal transfer. Solo-direct bookkeeping makes that call at decision time — every side-platform payout, marketplace settlement, and day-job paycheck is categorised across personal vs. side-business before the books close, reviewed by a senior, not autocategorised and left for April. The senior-direct model also covers quarterly estimates against the payout calendar, so the side-business liability sits inside the same envelope as the W-2 withholdings before the estimated-payment deadline, rather than arriving as a surprise on top of it.
How does AI handle the mixed 1099/W-2 income categorization without making errors?
AI handles the categorisation pass — every side-platform payout, 1099 receipt, and W-2 deposit run through the reconciliation and categorisation matrix before the books close. The senior reviews every AI-assisted categorisation patch before close is signed off, which is the layer that keeps a platform reimbursement from landing as Schedule C income or a day-job paycheck from bleeding into the side-business line. The published flat retainer absorbs the AI lane and the senior review; the side-hustler does not pay a separate audit fee every time the AI flags a mixed transaction for human review.
What do you actually deliver each month on a bookkeeping-for-side-hustlers engagement?
Five recurring artifacts ship every month at the published flat price, no separate invoice layered on: a categorisation matrix splitting personal vs. side-business across every income stream; a quarterly tax-estimate pack folding W-2 withholdings and side-business liability into the same envelope before the IRS deadline; a receipts and expense audit reconciling every side-platform charge and reimbursement inside the engagement window; a monthly close across bank, side-platform, marketplace, and day-job paycheck written so the side-hustler can read it Sunday morning and walk into Monday knowing the books are done; and a year-end Schedule C prep pack when the calendar rolls over. Those are the recurring deliverables — anything outside them is a written scope change, written down before any additional work begins.