# Purchasing quantities: minimums, packs and price breaks

Calculate a valid purchase quantity without confusing packaging, order increments, monetary minimums and discounts.

Reviewed: 2026-11-02

## Worked example: demand for 110 pieces

**120 pieces cost $300, while 144 cost $331.20.** In this example, the lowest valid quantity meets demand for 110 pieces. Assume the quote requires at least 100 pieces, orders in whole 24-piece packs, and at least $300 of goods excluding freight and tax. The unit price is $2.50 through 143 pieces and $2.30 for every piece at 144 or more. The price break applies to the entire line, not only the extra pieces.

| Candidate | Goods value | Result |
| --- | ---: | --- |
| 110 pieces | $275 | Not a whole-pack quantity and below the value minimum |
| 120 pieces | $300 | Meets all stated constraints; 10 pieces beyond demand |
| 144 pieces | $331.20 | Meets constraints at a lower unit price; 34 pieces beyond demand |

Buying 144 reduces unit price but increases current spending by $31.20. Expected future use, storage and obsolescence determine whether the extra stock is worthwhile.

If the offer used increments above an MOQ instead of whole packs, the permissible quantities would differ. The arithmetic follows the contract's rule, not the label alone.

## Find the allowed quantity before comparing prices

A quotation can combine a minimum quantity, ordering increments, packaging rules, a minimum monetary value and price breaks. **These are separate constraints.** Apply the stated rules together, then compare the total cost of the resulting purchase.

For example, Analog Devices defines MOQ per order line and separately describes increments above it. DigiKey distinguishes the package quantity from the minimum purchase qualifying for a quoted price. [Analog Devices ordering terminology](https://www.analog.com/en/support/maxim-ordering-faq.html) · [DigiKey quote guide](https://www.digikey.com/en/help-support/place-an-order/how-to-read-a-digi-key-quote)

## Minimum order quantity

MOQ is the smallest permitted quantity within the supplier's stated scope. Establish whether it applies to a line, product, configuration or order, and whether the unit is pieces, packs, mass or length. A 100-piece minimum does not by itself require all larger orders to be multiples of 100.

## Order multiples

An order multiple constrains the permitted increments. A rule may require multiples from zero or increments above a minimum. The starting point matters: a hypothetical minimum of 100 with increments of 24 above that minimum permits 100, 124 and 148; a rule requiring multiples of 24 with a minimum of 100 starts at 120.

Analog Devices' FAQ illustrates an MOQ-plus-increment convention. Confirm the actual quotation's convention before rounding; an ERP planning rule is not a substitute for the supplier's terms.

## Pack quantities

A pack quantity describes contents. It becomes a purchasing restriction only when the offer requires whole packs. For example, a bag of 25 washers and a carton of 10 bags contain 250 washers per carton. Seven cartons contain 1,750 washers; the bag and carton counts do not add as though they both count individual washers.

DigiKey's quote guide distinguishes cut tape, tape and reel, and custom reeling. A manufacturer's standard package therefore need not be the only quantity sold through a distributor. [DigiKey packaging definitions](https://www.digikey.com/en/help-support/place-an-order/how-to-read-a-digi-key-quote)

## Minimum order value

A minimum order value is a monetary threshold. Establish the currency, eligible goods and whether freight or tax counts. Meeting a quantity minimum does not necessarily meet the monetary minimum.

A threshold for accepting an order is different from a minimum invoice charge or a surcharge. Do not calculate a top-up unless the supplier's terms specify one. For production-service billing, see [minimum lot charges](../costing/methods/minimum-lot-charges.md).

## Price breaks and repeat orders

[All-units discounts](../commercial/terms/all-units-quantity-discounts.md) and [graduated discounts](../commercial/terms/graduated-quantity-discounts.md) calculate price differently. An annual blanket quantity also need not equal a release quantity: see [blanket agreements](purchasing/supplier-blanket-agreements.md).

For a manufactured item, compare purchase constraints with [setup costs](../costing/methods/setup-amortization.md) and the [complete part estimate](../costing/cost-structure-and-cost-bases.md). A lower unit price can coexist with a higher total purchase cost or additional inventory.

## Sources and scope

Reviewed November 2, 2026 PST. Supplier definitions above describe their documented conventions; the purchasing example is original and hypothetical. Actual quote scope, availability and accepted terms remain supplier-specific.