learn stage 3 7 min read

Integrating Time Tracking with Payroll: Which Connections Work and What to Watch Out For

Last reviewed: 2026-05-23 7 min read

The promise of a time tracking to payroll integration is that tracked hours flow directly into payroll without manual re-entry. The reality varies significantly depending on which tools you’re connecting and what “integration” actually means for each pair.

This guide covers the integrations that exist, what transfers, and the failure modes to check for before you run live payroll.

Why the integration matters

Manual re-entry of hours into payroll is a source of errors. A payroll administrator re-keying 25 employees’ weekly hours into a payroll system will make errors. Those errors result in incorrect pay, which creates compliance risk (underpayment of wages is a legal issue in both the UK and US) and employee trust problems.

The integration also saves time. At 25 employees, manual re-entry takes 30–60 minutes per payroll run. Monthly, that’s significant overhead that an integration eliminates.

Integration types: what they actually mean

Native integration: The time tracking tool and payroll tool are from the same vendor, or have a built-in connector. Hours sync with a button click or automatically on schedule. This is the smoothest option.

Third-party integration (Zapier/Make): A workflow automation tool maps fields between the two systems. Works, but requires setup and maintenance. If the API changes, the integration breaks.

CSV export/import: Time tracking exports a CSV; payroll imports it. This is manual, not automatic, but still faster than re-keying. The column mapping must match exactly.

No integration: Manual re-entry. This is common for niche payroll tools and purpose-built tools at the enterprise end.

Which integrations exist

Time tracking	Payroll	Integration type
Hubstaff	Gusto	Native
Hubstaff	QuickBooks Payroll	Native
Hubstaff	ADP	Native
Hubstaff	Paychex	Native
Hubstaff	Sage Payroll (UK)	Native
Clockify	QuickBooks Payroll	Native
Clockify	Xero Payroll	Native
Clockify	Gusto	Via Zapier
Toggl Track	QuickBooks	Native (accounting only, not payroll)
Toggl Track	Xero	Via Zapier
Harvest	QuickBooks Payroll	No (accounting only)
Harvest	Gusto	No
Timely	Any payroll	CSV export only

Key observation: Harvest is primarily a billing tool, not a payroll tool. Its QuickBooks integration is for accounting (invoices, expenses), not for payroll (hours to pay run). If you need Harvest hours in Gusto payroll, you’ll be doing a manual export.

Hubstaff has the strongest payroll integration story among dedicated time tracking tools — multiple native payroll connectors including US (Gusto, ADP, Paychex) and UK (Sage Payroll).

What the integration transfers

Even a “native” integration doesn’t always transfer everything. Check what actually syncs:

Usually transfers:

Total hours per employee per pay period
Overtime hours (regular vs OT)
Pay classification (if configured in time tracking tool)

Often does not transfer:

Cost codes or project breakdowns (payroll usually needs flat hours, not project-level detail)
PTO/holiday hours (usually managed separately in HRIS)
Different pay rates for different job types (depends on whether your payroll supports this)
Unpaid break deductions (some states require auto-deduction; verify this is handled)

Validating the integration before going live

Run a parallel payroll — meaning calculate payroll both with the integration and manually — for at least 2 pay periods before relying on the integration exclusively.

Validation checklist:

Total hours per employee: does the integrated figure match what you see in the time tracking tool?
Overtime hours: are hours over 40/week (or 8/day for California workers) correctly categorised?
Break deductions: if your payroll requires auto-deduction of unpaid breaks, is this happening?
Rounding: does the integration round to the nearest quarter-hour (common in US payroll)? Does this match your time tracking tool’s rounding settings?
Pay period cutoff: does the integration correctly cut off at the end of the pay period, not mid-shift?

A mismatch in any of these means a payroll error. Find them in the validation phase, not after you’ve paid people incorrectly.

UK-specific considerations

UK payroll has additional data requirements beyond hours:

HMRC RTI submission: UK payroll must submit a Full Payment Submission to HMRC on or before each pay day. Your payroll tool handles this — time tracking just feeds hours.

Sage Payroll integration: Hubstaff’s native Sage Payroll integration is the most commonly used path for UK businesses using time tracking with Sage HR or Sage Accounting.

Statutory payments: Statutory Sick Pay (SSP) and Statutory Maternity Pay (SMP) are not calculated from hours tracked — they’re managed in the payroll system. Your time tracking integration doesn’t need to handle these.

National Insurance thresholds: NI is calculated on total pay, not hours. This is a payroll calculation, not a time tracking function. The integration just needs to get hours right.

The payroll rounding problem

US payroll commonly rounds time entries to the nearest quarter-hour (or sometimes nearest tenth-of-an-hour). UK payroll typically uses actual minutes. If your time tracking tool and payroll tool use different rounding rules, you’ll get systematic mismatches.

How to check:

Look at your payroll system’s rounding setting (ADP, Gusto, etc. all have configurable rounding)
Look at your time tracking tool’s rounding setting (Hubstaff has configurable rounding; Clockify and Toggl Track record to the second)
Ensure they match before going live

A 6-minute rounding difference on 25 employees adds up. More importantly, systematic underpayment from rounding errors can become a wage theft issue under FLSA.

Recommended paths by tool combination

Hubstaff + Gusto (US): Best-in-class native integration. Hours flow to Gusto payroll on demand. Standard validation applies.

Clockify + Xero Payroll (UK or NZ): Native integration works well for hourly employees. Verify break deduction settings.

Toggl Track + any payroll: Expect CSV export. Toggl’s export includes hours by user and date range; you’ll need to configure your payroll import to match columns.

Harvest + QuickBooks Payroll: Use CSV export. Harvest’s payroll export includes regular and overtime hours per employee.

Timely + any payroll: CSV export only. Timely doesn’t have native payroll integrations. If you’re using Timely and need payroll integration, export weekly.