How this decision usually works
Weekly payroll vs fortnightly payroll is ultimately a question of fit. Weekly spreads cash outflows and shortens the feedback loop on timesheets, errors and underpayments. Fortnightly reduces the number of pay events, which can cut per-run fees and admin time.
Before changing cycles, check your employment contracts, award/EBA rules, and software cut-offs. Then model the cost and risk on real data: headcount, casual mix, timesheet variance, overtime/penalties, and how often you correct mistakes today.
Australian context to keep in view
- STP Phase 2: Every pay run is an STP event via compliant software (e.g. Xero, MYOB, QuickBooks). More frequent cycles mean more submissions to the ATO.
- Superannuation Guarantee: Accrues each pay and is currently 12%. Super is typically due quarterly, regardless of weekly or fortnightly cycles.
- Fair Work compliance: Awards/EBAs set ordinary hours, overtime triggers, allowances and penalty rates. Many reset weekly, which can favour weekly processing for accuracy.
- Pay slips: Must be issued within 1 working day of payment and include all required details, no matter the cycle.
What to compare before you commit
Scope
Confirm the scope behind weekly payroll vs fortnightly payroll: timesheets, leave, allowances, STP lodgement, super, payroll tax and year-end finalisation. Clarify onboarding/offboarding and Award/EBA interpretation.
Software fit
Check the provider\u2019s depth in your stack (payroll + time/roster tools). Look for clean workflows across timesheets, approvals, pay runs, STP and bank files to reduce rework.
Turnaround and communication
Agree on cut-off times, who chases missing timesheets, how errors are fixed, and escalation paths on pay day. Busy periods need clear SLAs to keep pay accurate and on time.
Commercial fit
Compare fee models (per pay run vs per employee vs fixed), and the true annual cost: runs per year, corrections, and ad hoc help. Balance price against compliance risk and staff experience.
Best next steps
Run a quick test on the last 8 weeks of data. If timesheet variance, overtime and adjustments are high, weekly often wins on accuracy and trust. If your team is stable and salaried, fortnightly usually wins on admin cost.
Cost sense-check: Annual payroll admin cost ≈ (fee per run × number of runs) + (internal time per run × hourly rate) + (error/rework time × hourly rate). Weekly has more runs but can reduce error/rework for variable rosters.
If you plan to switch, communicate early, align cut-off dates, pro-rate the first period, and test in a cloned or sandbox payroll file before the live run.
Frequently asked questions
What’s the practical difference between weekly and fortnightly payroll?
Weekly pays every 7 days, improves visibility and suits variable hours; fortnightly pays every 14 days, reduces admin and provider fees but creates larger cash spikes and longer waits for staff.
Which is cheaper overall?
If fees are per run, fortnightly is typically cheaper across the year. Factor in error/rework costs: weekly can lower corrections for variable-hour teams, which narrows or removes the gap.
How do awards, EBAs and STP Phase 2 influence the choice?
Where rules reset weekly, a weekly cycle can prevent misapplied overtime or penalties. STP2 requires correct mapping of earnings, allowances and leave each run, regardless of cycle.
Can we change cycles mid-year without chaos?
Yes. Give written notice, update contracts if needed, communicate new cut-offs, pro-rate the first period, and test end-to-end before go-live.