What belongs in the handling allowance?

Handling, kitting, moving cabinets between stations, checking square and fit, and paperwork. A time study that follows a cabinet from the cart to the bench sets the percentage; the 18 percent default is a starting point.

Why compare with available hours?

An assembly estimate only matters against the bench time the schedule gives it. The margin shows slack; an overage shows how many hours to recover through a second bench or less handling.

How do I set the assembly rate?

Time several cabinets on the actual bench and divide units by hours. Use your measured rate, because shop layouts, case sizes and hardware counts rarely match catalog figures.

Does the allowance raise hours or rate?

The allowance multiplies base labor, so it raises required hours only; the rate sets base labor. An 18 percent allowance is about 15 percent of the total estimate because it is calculated on base labor alone.

Furniture, Fixtures & Interior Products calculator

Cabinet Assembly Labor Calculator

Estimate cabinet assembly labor from the casework count and a measured bench rate, then add a handling allowance. The page compares the required hours with the hours your bench actually has.

What this calculator does

Cabinet assembly labor hours from the casework count and a bench rate, plus the margin against available hours.

Formula used

Base assembly labor = cabinets to assemble ÷ assembly rate
Required assembly labor = base labor × (1 + handling allowance ÷ 100)
Allowance hours = required assembly labor − base assembly labor
Margin to available hours = available assembly hours − required assembly labor

Inputs explained

Cabinets to Assemble: Casework units to assemble in this run, from the cut list.
Assembly Rate: Bench output in cabinets per hour, from a time study.
Handling Allowance: Percentage from your time study for handling between stations.
Available Assembly Hours: Scheduled bench hours for this run, from the shop calendar.

How to use the result

Best suited to checking a casework run against the schedule, choosing a bench rate for a quote, testing a handling allowance change.
Cure, finishing and installation time are separate; this page times assembly only. Cabinets in the run are assumed to be the same size and build.

Current U.S. benchmarks

The producer price index for lumber stands at 286.633 (BLS, Aug 2026), up 7.6% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The U.S. has 14,378 furniture and related products establishments employing about 355,594 workers (Census County Business Patterns, 2023).

Common questions

What belongs in the handling allowance? Handling, kitting, moving cabinets between stations, checking square and fit, and paperwork. A time study that follows a cabinet from the cart to the bench sets the percentage; the 18 percent default is a starting point.
Why compare with available hours? An assembly estimate only matters against the bench time the schedule gives it. The margin shows slack; an overage shows how many hours to recover through a second bench or less handling.
How do I set the assembly rate? Time several cabinets on the actual bench and divide units by hours. Use your measured rate, because shop layouts, case sizes and hardware counts rarely match catalog figures.
Does the allowance raise hours or rate? The allowance multiplies base labor, so it raises required hours only; the rate sets base labor. An 18 percent allowance is about 15 percent of the total estimate because it is calculated on base labor alone.

Last reviewed 2026-10-01.