Throughput: how much work your team really finishes

Key takeaways

Throughput is the amount of finished work a process delivers in a period, such as invoices processed or tickets resolved per week. It counts only completed items, not work started. It matters because it, together with the amount of work in progress, sets how long customers wait. Raise it by removing the bottleneck, rework and waiting, before adding people.

• Throughput counts finished items per period.
• Started but unfinished work does not count.
• The bottleneck step sets the throughput of the whole process.
• Remove rework and waits before adding capacity.

What is throughput?

Throughput is the rate at which a process completes items to the required standard. It is measured as a count per period, such as 250 orders dispatched a day. In Little's law, average lead time equals work in progress divided by throughput, so throughput directly affects how long customers wait.

• How outsourcing can improve business efficiency
• Little's law: why more work in progress slows delivery

How do you measure it?

Count items that reached done in each week, using your acceptance criteria. Track it by process, and alongside arrivals. If arrivals are higher than throughput week after week, a backlog is growing. Exclude items that were reopened or corrected, or count them separately.

• Acceptance criteria: define done for outsourced work
• Work ageing report: find the jobs that have been waiting

What limits throughput?

Throughput is limited by the slowest step, the bottleneck. Improving any other step does not raise output, because work just queues at the bottleneck. Rework also cuts throughput, since corrected items use capacity twice. So does work waiting for information or approval.

• The bottleneck step or person.
• Rework that uses capacity twice.
• Waiting for information or approvals.
• Too much work started at once.

• How to find the bottleneck that is capping your growth
• Approval bottlenecks: when sign-off holds up the work

What does raising it look like?

In an illustrative process, three people complete about 200 customer onboarding packs a week, but the director's sign-off handles only about 150. Throughput is 150, and a backlog grows. Delegating sign-off for standard cases under written limits lifts throughput to 200 with no extra staff. Example figures only.

• Right first time rate: the quality number that cuts cost
• Takt time for service teams: pace work to demand

How does outsourcing affect throughput?

Outsourcing raises throughput when the provider takes on the bottleneck step or the routine work around it, and works it every day. It does not help if the bottleneck stays in-house, such as an approval only the owner can give. Find the bottleneck first, then decide what to hand over.

• Overflow outsourcing: hand off only work above your limit
• Outsourced team productivity: measure it like for like

When is throughput the wrong focus?

Throughput is the wrong focus when work is low volume and high value, such as complex advice, where quality and outcome matter more than count. It also misleads if it rewards closing items before they are really resolved.

• Efficiency vs effectiveness: which should you fix first?

What does this look like in practice?

A pattern we see: a business adds a person to a busy team and output barely moves, because the limit was a sign-off step elsewhere. Measuring throughput step by step shows where the real constraint is.

• See client work
• BPO Solutions for UK businesses

Throughput checklist

Use these to measure and raise it.

• Count finished items weekly.
• Compare with arrivals.
• Find the slowest step.
• Remove rework and waits there.
• Add capacity only at the bottleneck.

• Outsourcing efficiency KPIs: prove the work got faster

Next step

Send us weekly arrivals and completions for one process. We will help you find what limits throughput and what would raise it.