Supplier Cost Calculator
Calculate total annual supplier cost and a supplier cost index including freight, quality, ordering and late-delivery costs.
In short
Formula: Total = purchases + freight + quality cost + orders × cost per order + late-delivery cost. Index = total ÷ purchases.
What this calculator does
Calculate total annual supplier cost and a supplier cost index including freight, quality, ordering and late-delivery costs. Worked example, questions and limitations included.
Use it to turn Currency (symbol only, never converted), Annual purchase value, Annual freight paid, Annual quality and rework cost, and the other shown inputs into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this procurement calculation.
Inputs and what they mean
- Currency (symbol only, never converted)
- — choice value.
- Annual purchase value
- — number value.
- Annual freight paid
- — number value.
- Annual quality and rework cost
- — number value.
- Orders placed per year
- — number value.
- Internal cost per order
- — number value.
- Annual cost of late deliveries
- — number value.
How to use it
- Enter each value in the unit shown next to the box (use the unit converter first if your numbers are in other units).
- Check the breakdown to see every intermediate step.
- Read the limitations before relying on the result.
Formula
Supplier total cost index, a TCO-based measure (ASCM dictionary).
All cost figures are yours; none are estimated.
Compare suppliers by index rather than price.
Total = purchases + freight + quality cost + orders × cost per order + late-delivery cost. Index = total ÷ purchases.
Inputs used: Currency (symbol only, never converted), Annual purchase value, Annual freight paid, Annual quality and rework cost, Orders placed per year, Internal cost per order, Annual cost of late deliveries.
Worked example
Annual review
- Order handling = 5,400.
- Total = $535,900.
- Index = 1.0718.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Annual totals only.
- Hidden costs depend on your tracking.
- No risk scoring.
- Results are planning estimates built only from the figures you enter. No prices, rates, demand patterns or service levels are built in, and the results are not supplier quotes or carrier rates.
- The result depends on the values you enter for this supplier cost calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Common questions
How do I estimate late-delivery cost?
Expediting fees, overtime and lost sales attributable to late orders over the year. Check the formula, example, and limitations on this page before using the result for a real procurement decision.
What is a good index?
Closer to 1.00 is better; compare suppliers of the same item. Check the formula, example, and limitations on this page before using the result for a real procurement decision.
Where does internal cost per order come from?
Purchasing and receiving labour per order — your own time study or finance figure. Check the formula, example, and limitations on this page before using the result for a real procurement decision.
How do I use the Supplier Cost Calculator?
Enter the required values for Currency (symbol only, never converted), Annual purchase value, Annual freight paid, Annual quality and rework cost, Orders placed per year, and the other fields shown. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the Supplier Cost Calculator use?
Total = purchases + freight + quality cost + orders × cost per order + late-delivery cost. Index = total ÷ purchases. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.
Can the Supplier Cost Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
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