Onboarding a New Client onto Expense Software
A T&S/ERR service is only as good as the rollout. Onboard a client well and the data arrives clean, the bands are right, and filings run on rails. Onboard badly and you're chasing and fixing all year. This is a practical, repeatable playbook for setting a new client up on expense software — the setup steps, getting staff logging cleanly from day one, and turning it into a checklist you can run in minutes for every client.
Why the Rollout Decides Everything
Almost every recurring problem in a T&S/ERR service traces back to onboarding: a normal place of work that was never set, staff who weren't enrolled and so default to a spreadsheet, a pay-cycle that doesn't line up with the ERR deadline. Fix these once, at the start, and they never resurface.
Done right, onboarding is also fast — minutes per client, not a project — which is exactly what makes the service profitable and the multi-client workflow scalable.
The Onboarding Playbook
Add the client to your practice dashboard
Create the client company under your practitioner login, so it sits alongside your other clients in one place.
Configure the basics
Set each employee's normal place of work and base, the vehicles in use (own vs company car), and the approval chain. This is the step that keeps every later claim correct.
Enrol the client's staff
Invite staff to log trips themselves — ideally from a phone, at the time of travel — with the required fields defined up front.
Set the pay-cycle and ERR cadence
Align the expense cut-off with the client's pay run so the ERR export is ready to file to ROS on or before payment.
Run a first cycle and review
Process one pay cycle end to end — staff logging, your review, the ERR export — and confirm the figures and timing before it becomes routine.
Settle into the recurring rhythm
Hand the client a simple "what we need and when" summary, and the service runs on rails from there.
Clean Data From Day One
The single biggest determinant of how much ongoing work a client creates is whether their data arrives clean. Set that up during onboarding.
Capture at source
Staff log trips on a phone, at the time — not reconstructed from memory at month-end.
Define the required fields
Date, start/end, distance, business purpose, and times where subsistence applies — agreed up front.
Set a cut-off
A clear deadline before each pay run, so you review and file rather than chase.
Onboarding Pitfalls to Avoid
- Skipping the normal place of work. Set it per employee at setup — it drives whether journeys are business travel or commuting. See normal place of work.
- Wrong vehicle basis. Mark company-car drivers so they don't generate mileage they aren't entitled to claim.
- Undefined approval chain. Decide who approves before the first claim, with no self-approval.
- Staff not enrolled. Anyone left out defaults to a side spreadsheet — the exact mess you're onboarding to avoid.
- Mid-year start without YTD distance. Capture each employee's year-to-date business km so the progressive bands continue correctly.
- Pay-cycle not aligned to ERR. Set the cut-off so the ERR export is ready on or before payment, every run.
Make It Repeatable
The first onboarding takes thought; every one after should be a checklist. Capture the six steps above as a standard practice playbook — your reusable onboarding kit — so each new client is set up the same way, in minutes, and behaves identically at filing time.
That consistency is what lets a practice add clients without adding headcount: the onboarding is fixed, the data arrives clean, and the recurring work stays small per client. It's the operational backbone behind protecting clients and running T&S as a profitable service.
How Expense.ie Makes Onboarding Fast
Add clients from one dashboard
Create and configure each client company under your free practitioner login — no separate accounts to juggle.
Rates built in
Civil service rates, progressive bands, and the lesser-of rule are there from the start — you set the base and NPW, the tool does the maths.
Staff log from a phone
Quick enrolment and mobile logging mean the client's team is capturing clean data from day one.
Same setup, every client
A consistent configuration means every client onboards the same way and behaves the same at ERR time — minutes, not a project.
Onboarding FAQ
Related Resources
Onboard Your First Client in Minutes
Free practitioner access lets you add a client, set their base and rates, enrol staff, and run a first cycle — all from one dashboard. Set the playbook once and every client after takes minutes.
Free for practitioners. No per-seat charge to manage your clients.