Nurse bookkeeping: when two T4s and agency shifts share one tax return

First, know which of your incomes is which

Modern nursing income rarely comes from one place. The same nurse can be an employee at a hospital, an employee of one staffing agency, and an independent contractor to another — and each arrangement is taxed and tracked differently. Sorting the streams is the foundation everything else sits on:

The contractor rows are the ones that go wrong. No slip does not mean no income — CRA can see agency payment records, and reconstructed shift income in an audit always costs more than a spreadsheet kept in real time. Our shift ledger is deliberately simple: date, facility, agency, hours, rate, gross fee, and date paid. Seven columns, updated weekly, and it doubles as your collections list when an agency quietly falls behind on payments — which happens more often in staffing than anyone admits.

The multi-T4 trap: everyone withholds like they are your only employer

Each employer runs payroll as if their salary were your whole income: the basic personal amount is applied at each job unless your TD1 says otherwise, and tax is withheld at rates far below where your combined income actually sits. CPP and EI also restart at every employer — the overpayments come back on your return, but the income-tax shortfall does not fix itself. The practical moves are simple and almost nobody makes them: tick the more-than-one-employer box on the TD1 at the second job, or request extra withholding per pay. Once your balance owing tops $3,000 in back-to-back years, CRA starts asking for quarterly instalments, and we plan those from the books rather than reacting to the reminder letters.

The T2125 side needs a log, not a shoebox

Self-employed shift income opens deductions your T4 jobs never allow — but only with records. We set up a separate bank account for contract deposits, and a simple expense log that captures the recurring items: mileage between facilities with a proper logbook, College of Nurses of Ontario registration, liability protection, uniforms and shoes bought for the contract work, continuing education, agency platform fees, and a defensible share of your phone. Two caveats keep the log honest. Travel between client sites is deductible; ordinary commuting to a single regular workplace is not. And as a T4 employee you generally cannot deduct these costs at all without a signed T2200, which hospitals rarely issue — so the log lives entirely on the self-employed side.

GST/HST: mostly exempt, with edges worth watching

Nursing services rendered to individuals are HST-exempt, so most contract nurses never charge tax no matter how much they bill. The edges are non-clinical work: consulting, teaching, medical-legal file review, and cosmetic procedures are generally taxable services. If those grow, the $30,000 small-supplier threshold starts to matter, and the books need taxable revenue in its own account long before registration becomes a question.

Travel nursing and the year-end package

Because the streams were separated all year, year-end is assembly: T4s stacked, T2125 built from the shift ledger and expense log, instalments already paid, and a tax reserve that was set aside as a percentage of every contract deposit rather than found in April. The reserve is the habit that changes everything — self-employed shift income arrives gross, so we set a percentage with you based on your bracket and move it to a separate account the day each deposit lands. Nurse practitioners running clinic income through a professional corporation get the same discipline at the corporate level, with books built for a T2 instead. If US travel nursing on TN status is on your list — dual filing, residency ties, state licensure — the border side lives on our cross-border tax page for nurses, and the mechanics of our monthly close are on the bookkeeping services page.

Source: CRA — Form T2125, Statement of Business or Professional Activities.