How it connects
Connection runs through Intuit's OAuth flow. You click Connect in Renttix, choose the QuickBooks company you want to link, and approve. Renttix stores a revocable token rather than credentials, and refreshes it automatically as it ages. The integration page shows the live connection status, and disconnecting is a single action that takes effect immediately. With the link in place, customer records sync from Renttix into QuickBooks so you are not maintaining two address books, and tax settings are brought into line so hire lines post to the codes your accountant expects. Because rental invoicing produces a high volume of small, similar documents, this matters more here than in most businesses — a coding mistake repeated across a month of hire lines is a long evening to unpick. Settlement is where the integration earns its keep. When a Renttix invoice is marked paid, the matching QuickBooks invoice is located and a payment is posted against it, so the receivables ledger clears without anyone touching it. Renttix resolves the QuickBooks invoice by its internal transaction id or its human-readable document number, which means links made before and after the integration was introduced both continue to work.
Why it matters
Most hire businesses do not have a finance department — they have someone who also does finance. That person is the constraint. Every hour spent copying invoice lines from a rental system into QuickBooks is an hour not spent chasing debt, checking margin or answering a customer who is deciding whether to hire from you again. The volume problem is specific to rental. A sale is one invoice. A hire is an invoice every week for as long as it runs, plus an adjustment when it is extended, plus a recharge when something comes back damaged. Manual re-entry does not scale with that shape, and the failure mode is not that the work stops — it is that it falls behind, and nobody knows by how much. With QuickBooks connected, invoicing and settlement stop being a queue of admin. Your books reflect what actually happened in the yard, and they reflect it today rather than whenever someone next gets to it. That makes the reports you make decisions from worth reading.
Key workflows
Automatic payment settlement
Marking a hire invoice paid in Renttix posts a matching payment against the corresponding invoice in QuickBooks. Your accounts receivable ledger clears in step with reality, so credit control works from current figures rather than a snapshot someone exported last week.
Customer synchronisation
Customer records push from Renttix to QuickBooks, so a new hire account does not have to be created twice. Your operations team works from the customer list they maintain, and your books use the same names and details without a reconciliation step in between.
Consistent tax treatment
Tax settings are synchronised so hire lines post to the codes your accountant expects. On rental volumes — where the same line repeats weekly across many live contracts — getting this right once avoids correcting it many times.
QuickBooks sits alongside Xero, Sage, Zoho and MYOB as one of the accounting systems Renttix connects to, sharing the same underlying customer, invoice and tax plumbing. Renttix remains the operational record — what is on hire, what is due back, what it earned — while QuickBooks remains your book of account. For payroll, Renttix exports costed hours as a file for QuickBooks Payroll rather than posting directly.
QuickBooks integration FAQ
QuickBooks Online. The connection is made through Intuit's OAuth flow from the integrations area in Renttix, and you can disconnect at any time. QuickBooks Desktop is not connected directly — hire data can still reach it through file export.
Not directly. Renttix produces a costed payroll export — timesheet hours, overtime, adjustments and expenses — as a file you import to your payroll provider. Direct timesheet posting is currently available for Xero Payroll in the UK only.
Renttix resolves the QuickBooks invoice by its internal transaction id or by its document number, so historic links made under either convention are matched correctly. If no matching invoice can be found, the payment is not posted blindly — the mismatch is surfaced rather than settled against the wrong record.
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