How do you calculate solder paste cost per board?

Divide total paste cost by the number of good boards, then multiply by any allocation or currency factor. With $420 of paste over 1,800 good boards at a factor of 1, the cost is about $0.233 per board.

What is a typical solder paste cost per board?

For most assemblies paste runs a few cents to a few tens of cents per board, depending on size and density. The $0.23 default is reasonable for a mid-size board; high-component-count boards with lots of fine pitch cost more.

Why divide by good boards instead of total boards?

Because paste spent on boards that fail and get scrapped still costs money but produces no sellable unit. Dividing by good output rolls that loss into the per-board cost, giving a truer figure for quoting.

What is the allocation or currency factor for?

It scales the raw per-board cost. Set it to 1 to leave the number as-is, use it to convert to another currency, or use it to load a portion of shared paste cost or overhead onto a specific product.

How does yield affect paste cost per board?

Lower yield means fewer good boards over the same paste spend, so cost per board rises. If 1,800 good boards became 1,600 over the same $420, cost would climb from $0.233 to about $0.263 per board.

Solder paste cost per board vs total paste cost: which should I quote on?

Quote on cost per board. Total paste cost only makes sense against a fixed run; per-board cost normalizes for volume and lets you compare products and feed a standard cost system directly.

Electronics Manufacturing calculator

Solder Paste Cost Per Board Calculator

Solder paste cost per board converts a bulk paste spend into a per-unit material cost you can drop straight into a quote or a standard cost roll-up. SMT cost engineers and program managers use it to understand what paste actually contributes to the bill of materials and to spot when scrap or low yield is inflating that contribution. Because the divisor is good boards, not boards started, this metric quietly captures the cost of rework and reject as well as raw consumption. An allocation or currency factor lets you load overhead, convert currencies, or assign shared paste cost across products on one line.

What this calculator does

Convert solder paste spend into cost per assembled board.
an estimator needs solder paste cost per board for a PCB assembly quote
It computes the solder paste material cost attributable to each good board by dividing total paste cost by good output and applying an allocation or currency factor.

Formula used

Unadjusted paste cost per board = total solder paste cost ÷ good boards covered
Solder paste cost per board = unadjusted paste cost per board × allocation or currency factor

Inputs explained

Total solder paste cost:
Good boards covered:
Allocation or currency factor:

How to use the result

Use it when building a per-board cost for quoting, comparing paste cost across products, or tracking the effect of yield on material cost.
It only covers paste; full board cost also needs components, bare PCB, labor, and machine time, so don't treat this as the complete material number.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
The U.S. has 11,261 computer and electronic products establishments employing about 815,443 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate solder paste cost per board? Divide total paste cost by the number of good boards, then multiply by any allocation or currency factor. With $420 of paste over 1,800 good boards at a factor of 1, the cost is about $0.233 per board.
What is a typical solder paste cost per board? For most assemblies paste runs a few cents to a few tens of cents per board, depending on size and density. The $0.23 default is reasonable for a mid-size board; high-component-count boards with lots of fine pitch cost more.
Why divide by good boards instead of total boards? Because paste spent on boards that fail and get scrapped still costs money but produces no sellable unit. Dividing by good output rolls that loss into the per-board cost, giving a truer figure for quoting.
What is the allocation or currency factor for? It scales the raw per-board cost. Set it to 1 to leave the number as-is, use it to convert to another currency, or use it to load a portion of shared paste cost or overhead onto a specific product.
How does yield affect paste cost per board? Lower yield means fewer good boards over the same paste spend, so cost per board rises. If 1,800 good boards became 1,600 over the same $420, cost would climb from $0.233 to about $0.263 per board.

Last reviewed 2026-05-12.