Questions to Ask a Vendor Before Buying PSA or Billing Software

Demos show a ticket, then an invoice, but real work depends on the thin line between them, and the vendor rarely opens that line unless you ask. Ask the vendor to open a contract record and show which tickets, time entries and recurring charges hang from it, plus the prepaid hours block.

Question one: if the covered user count changes on the twentieth, what does this month’s invoice show, and which line carries the difference? Question two: can one customer hold several contracts at different rates, such as managed services, a project block and a monthly retainer, without a spreadsheet?

Watch for the workaround answer. “You can do that with a custom field” often means a person doing it by hand every month, so add the cost of that labour to your comparison.

Invoices depend on the numbers that arrive, so ask how licence counts from Microsoft 365, backup storage and RMM device counts reach the system. Is it an API connector, a scheduled CSV import or a person retyping figures from a distributor portal into the invoice run? Retyping is more common than vendors admit.

Question three: who hears of a failed import? Question four: can I see the raw usage next to the invoice line it produced, so a customer query about the Microsoft licence count takes a minute?

Bring an export from your distributor portal and ask them to load it live, since an import that needs weeks of mapping is a cost the quote hides. Put that effort in your comparison.

Recurring revenue lives or dies on renewals. Ask what the system does ninety days before a contract ends, and whether it raises a task, notifies the account manager or drafts the renewal quote. Or does it do nothing at all?

Question five: can I apply an annual price rise to every contract on one run, with an exclusion list for the ones under a fixed term? Question six: how do licences co-terminate?

Ask to see the report of contracts expiring in the next quarter, because a report that is hard to build in the demo will stay hard on Monday morning. Test it now.

Question seven: how does proration work for a user added on the eleventh of a thirty day month, and which line shows the calculation? Ask for the calculation, not the promise. Question eight: which accounting packages sync, and does the sync send invoices only, or also credit notes and payments back, with the receipt matched to the invoice it settles?

Tax treatment varies between countries, so ask how the system handles your own VAT codes, reverse charge cases and multi currency invoices raised to a customer abroad. Do not accept a general yes. Ask for the screen.

Ask who reconciles when the two systems disagree. A sync that fails silently is worse than no sync, because silence hides errors until the quarter closes and the accountant finds a gap nobody can trace.

Question nine: can I export every contract, ticket, time entry and invoice in a standard format, today, without an extra fee or a support ticket? Question ten: what happens to my data when I cancel, how long until it is deleted, and who confirms the deletion in writing?

Get the notice period, the renewal clause and the support hours in writing, then check where the data is hosted and who can reach it. Write down the answers.

Take these ten questions to your next vendor call, mark each answer as shown, told or avoided, and compare the scores before you talk price.