Import WakaTime and Toggl Hours into Invoices
Source: https://www.getinvoiceagent.com/features/time-tracking-invoice-imports
Reviewed: 2026-09-07 | Owner: InvoiceAgent editorial team

Illustrative example; adapt to your agreement. Not a record of a real client invoice.

Worked example: 12.5 hours at $80 per hour

1. Reconcile the source duration
Example: the selected project and billing period return 45,000 seconds. Divide by 3,600 to get 12.5 hours. Compare that period with the client's approved work and check for internal meetings, duplicated entries, or unfinished timers before importing. The example assumes all 12.5 hours are approved and uses no tax or FX conversion.

2. Apply the agreed hourly rate
At $80 per hour, 12.5 × $80 = $1,000. The amount calculation uses the imported hours and rounds the result to cents; the description displays hours to two decimal places. For durations that do not divide neatly, multiplying only the displayed hours can differ slightly from the calculated line amount.

3. Account for a later correction
If another 1,800 seconds is added to the same project period before dispatch, synced time becomes 46,800 seconds / 3,600 = 13 hours. The refreshed charge is 13 × $80 = $1,040. Review late changes with the client when required. If the source connection fails at send time, inspect the failed invoice and restore the connection before retrying.

YOUR BILLING REVIEW
Client: ____________________  Invoice/reference: ____________________
Reviewer: __________________  Review date: _________________________
Send date/time: ____________  Due date: ____________________________
Amount/currency: ___________  Next action/owner: ____________________

[ ] Provider account and project checked
[ ] Start/end dates reconciled against the source report
[ ] Personal versus team scope verified
[ ] Non-billable work and unfinished timers reviewed
[ ] Imported seconds divided by 3,600 and reconciled to hours
[ ] Hourly rate and currency confirmed
[ ] Line total checked using full precision hours and cent rounding
[ ] Ongoing sync or fixed manual amount chosen deliberately
[ ] Recurring offsets checked for gaps and overlaps
[ ] Preview/test send checked; late source corrections reviewed

EXCEPTIONS AND LIMITS

Account scope is not team scope
Do not assume a connected Toggl account imports everyone else's project hours. Reconcile the returned personal entries against the work being billed. Use an approved team report and a manually reviewed amount when the import does not cover the required scope.

A date range is not an approval period
Check the returned hours against the same dates in the source report, especially near midnight or when reports use a different timezone. Toggl requests use UTC date boundaries. For recurring synced invoices, stored day offsets move with the send date; verify them again when month length or weekend handling changes.

Live sync is not a frozen quote
Do not promise that a synced draft total is final while time entries remain editable. Finish the review first or use a fixed manual line. Keep extra fees separate and check that the same hours have not also been included in a manual amount.

RELATED RESOURCES
Understand the WakaTime invoice connection: https://www.getinvoiceagent.com/integrations/wakatime-invoice-integration
Review the Toggl Track integration workflow: https://www.getinvoiceagent.com/integrations/toggl-track-invoice-integration
Preview the imported line before sending: https://www.getinvoiceagent.com/features/invoice-preview-and-test-send
Combine tracked project work and support retainers: https://www.getinvoiceagent.com/invoice-software-for-it-consultants