Time tracking rounding and minimum billing increments
The increment is only half the policy. Direction, aggregation and minimum charges can change the same week’s bill substantially. Compare the arithmetic before choosing what your agreement will say.
Product claims checked against the ABH truth sheet on 14 October 2026. Examples are fictional and illustrative. Operational guidance only, not legal, tax or accounting advice.
Short answer
Agree the increment, rounding direction, aggregation level and any minimum before work starts. Preserve original duration and show how the charge was calculated. ABH time approval supports review; this article describes manual policies, not product rounding settings.
Review current plans for the time and invoicing workflow. Client funds are received outside ABH and recorded manually.
Why rounding exists
Rounding translates recorded duration into a billing unit. A minimum sets the smallest charge for a qualifying event. They answer different questions and should be written separately. An agency might record exact minutes but apply an agreed minimum to a distinct support call. Without clear boundaries, two reviewers can turn identical work into different invoice amounts, even while both believe they followed the policy.
Keep the original duration available so you can explain the calculation. Rounding should not conceal a guessed timesheet or manufacture authorization for work outside scope. Start from reliable records and the agreement. The time-to-invoice guide covers the handoff, while the billable versus non-billable guide answers whether the work is eligible at all.
Exact minutes, 6 minute, 15 minute and minimum charges compared
Exact-minute billing multiplies recorded minutes by the hourly rate divided by sixty. Six-minute units divide an hour into tenths; fifteen-minute units divide it into quarters. Specify whether units are rounded up, down or to the nearest boundary. A minimum, such as an agreed fifteen-minute charge per support incident, is a floor rather than a direction for rounding every entry.
Define the aggregation unit as well: individual entry, incident, day or week. Rounding three fragments separately can produce a different charge from rounding their total. Make clear how interruptions and resumed work relate to one incident. These are alternative agency policies, not ABH settings, legal requirements or claims about an industry standard. Ask a qualified adviser about rules applicable to your engagement.
Worked example of one week
Illustrative fictional example, USD, excluding taxes: one eligible task takes 8 minutes on Monday, 14 on Tuesday and 20 on Wednesday, totaling 42 minutes. At $120 per hour, exact-minute billing is $84. Rounding the weekly total upward to six-minute units still gives 42 minutes and $84; rounding it upward to fifteen-minute units gives 45 minutes and $90.
Rounding each entry upward changes the result. Six-minute units produce 12, 18 and 24 minutes, totaling 54 minutes and $108. Fifteen-minute units produce 15, 15 and 30 minutes, totaling 60 minutes and $120. A fifteen-minute minimum per entry would instead give 15, 15 and 20 minutes, totaling 50 minutes and $100. These differences show why the aggregation rule belongs beside the increment.
Disclose the rule in the agreement and on the invoice
Write the policy before work starts, including the increment, direction, aggregation unit, minimum and any exclusions. Give a short numerical example so the client can see what the words mean. Confirm who may approve an exception. A clause saying “time rounded as appropriate” gives neither delivery nor the client a dependable way to check a charge.
On the invoice, explain the billing basis without turning the line into an unreadable calculation sheet. Keep the original durations and a supporting worksheet available if the client asks. ABH supports invoice PDFs, due dates, statuses and public invoice links; this does not mean it applies a rounding policy. For the supporting record, use the proof-of-work checklist.
Where rounding hurts trust
Small fragments can become large billed totals when each is rounded up independently. Splitting one task into several entries must not create several minimum charges unless the agreement clearly defines separate qualifying events. Combining unrelated work to hide the calculation is also unhelpful. Review the difference between recorded and charged duration before sending, particularly when work consists of frequent short interruptions.
Consider whether a fixed support fee, an exact-minute approach or a different service arrangement would be easier for both parties to understand on future work. Do not change the rule retrospectively because one week's outcome looks unfavorable. A complaint about rounding should lead back to the written agreement and calculation, using the invoice dispute sequence if necessary.
Apply the rule consistently at approval
At review, establish eligibility first, then apply the documented billing calculation once at the agreed aggregation level. Preserve the source duration, calculated charge and reason for any exception in a controlled working record. Have a second person check the arithmetic when the policy is unfamiliar. Time approval is not permission to apply an undisclosed minimum or charge for unapproved scope.
ABH supports single and bulk time entry approval and proof-backed lines linked to logged time. This guide describes a manual policy and calculation, not an ABH rounding setting. Do not overwrite accurate duration merely to make it resemble the billed units. Use the timesheet approval workflow and description examples to keep the underlying work understandable.
Frequently asked questions
Is a fifteen-minute increment required?
This guide makes no legal or industry-standard claim. Choose an understandable policy for the engagement and check applicable requirements with a qualified adviser.
Is rounding each entry the same as rounding the weekly total?
No. Separate upward rounding can produce a larger billed duration. State the aggregation level explicitly.
Does ABH apply the rounding examples automatically?
No rounding policy setting is claimed here. Keep a manual calculation and preserve the original time evidence.
Make the calculation explainable.
Review current plans for the time and invoicing workflow. Client funds are received outside ABH and recorded manually.