Measure approval cycle time from invoice receipt to scheduled payment

Question and scope

The scope of this approval cycle time protocol is the population named below, not every invoice or vendor in the ledger. Write the start event, the stop event, and the pause rule before collecting data. A count without a denominator is not a measurement, especially when the queue changes size during the day. Accounts Payable Manager records the window and every exclusion so a second reviewer can repeat the sample. Accounts Payable Manager applies this rule to approval cycle time before the sample is drawn.

The question behind this approval cycle time protocol is narrow on purpose. It asks whether the evidence supports median and upper-quartile days from receipt to scheduling, not whether the team feels busy. A broad question produces a broad answer that cannot be tested. A narrow question can be repeated after the workflow changes, which is what makes it useful. The same approval cycle time rule is checked again after the workflow changes.

Population and unit of analysis

Accounts Payable Manager defines the population before the first case is selected. The population is invoices received and scheduled during the observation window, and every exclusion is listed with a reason. A sample drawn from a convenience queue can make a fragile control look stable. The point is to describe the population that actually exists, not the one the team wishes it had. Accounts Payable Manager applies this rule to approval cycle time before the sample is drawn.

The unit is one invoice from receipt timestamp to scheduled payment. Test the definition on a case that crosses owners, a case that is still open, and a case that was reopened. Apply the same rule to every case and keep the rule beside the extract. A definition that changes halfway through the window destroys comparability. The same approval cycle time rule is checked again after the workflow changes.

Definitions and measures

Define completion before the first case. For this protocol, completion means the record supports the measure with a dated source and a named reviewer. A case that fails the definition stays open even when a status field says closed. Accounts Payable Manager records the status field and the evidence separately so the difference remains visible. Accounts Payable Manager applies this rule to approval cycle time before the sample is drawn.

Each case needs a source, an observation time, the field it supports, and the reviewer who checked it. Mark missing, unavailable, and confirmed negative values separately. Collapsing them hides the difference between no evidence and evidence of absence. The data dictionary should name the allowed values before collection begins. The same approval cycle time rule is checked again after the workflow changes.

Evidence standard

Sample across the full observation window, including busy days and days when coverage changed. A sample drawn only from quiet days can make a fragile control look stable. Record the date and time of each observation. If the population is small, report the count and the instability instead of a precise-looking rate. Accounts Payable Manager applies this rule to approval cycle time before the sample is drawn.

The evidence standard for approval cycle time should be written before the sample is selected. A reviewer needs to know which source counts, what date is attached, and how a missing field is treated. Accounts Payable Manager keeps a short codebook beside the extract so the rule does not live in one person's memory. The codebook is part of the method, not an afterthought. The same approval cycle time rule is checked again after the workflow changes.

Sampling and collection

A change in systems, policy, vendor mix, or volume can make the result stale. Record those triggers with the finding. If the definition changes, keep the old and new rules side by side for the transition period. Label which rule applies to each case so the comparison remains honest. Accounts Payable Manager applies this rule to approval cycle time before the sample is drawn.

Show the distribution, not only the mean. A median close time can hide a long tail of cases that nobody reviews. Report the open-case count and the oldest case age by owner. That view shows where delay accumulates and which queue needs a process change. The same approval cycle time rule is checked again after the workflow changes.

Limits and honest reporting

Give the review a named owner and a review date. The report should end with one next action: fix the source, simplify the field, change the queue, or stop the work until the owner decides. Accounts Payable Manager then repeats the protocol after the change and compares the same definitions. The next sample uses the same codebook and the same population rule. Accounts Payable Manager applies this rule to approval cycle time before the sample is drawn.

Report what moved, what did not, and what remains unknown. That final sentence is the honest close of a measurement protocol. It is more useful than a precise-looking rate built on an unclear denominator. The goal is a reviewable decision, not a perfect number. The same approval cycle time rule is checked again after the workflow changes.

Method note

This protocol measures median and upper-quartile days from receipt to scheduling for invoices received and scheduled during the observation window. It reports the denominator, the observation window, the missing-evidence count, and the limits of the audit log. It is a local review method, not an audit opinion or an industry benchmark.

Common questions answered

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