How to Compare Component Quotes from Several Suppliers on Equal Terms

Three suppliers can quote the same IC and still be offering three different deals. One price is in US dollars at a Singapore warehouse, another is in rupees delivered to your Pune factory, and the third is for open-market stock that your quality team will want to test. Put those numbers side by side as they arrive and the cheapest-looking line usually wins for the wrong reason.

This guide sets out a working method: lock the scope, expose every exception, convert everything to one commercial basis, calculate landed cost per usable part, and only then score the softer factors. A worked example in rupees shows how the ranking can flip.

Start from one RFQ, not three conversations

Comparison gets hard when each supplier answered a slightly different question. Send every supplier the same RFQ revision, and for each line state the internal item code, the full manufacturer part number (MPN) with its packaging suffix, the manufacturer, any alternates engineering has already approved, the quantity you actually need and any volume scenarios, the delivery date and destination, your traceability and date-code requirements, the currency and Incoterm you would like quoted, and the date by which the quote must remain valid.

Ask for answers in a line-level template, such as a spreadsheet with one row per MPN. Free-form PDFs make it easy for a supplier to skip an awkward line or slip in a substitute without anyone noticing. Keep the RFQ number and the quote revision on every row, so a later "updated offer" sits beside the original rather than overwriting it.

Step 1: Check that every line is the same part

Compare part numbers before prices. Highlight every suffix change, partial quantity and "equivalent" offered in place of the requested MPN. A one-character suffix can mean a different temperature grade, package or packing method. Engineering, not purchasing, decides whether an alternate is acceptable, after looking at electrical limits, pinout, package, firmware and qualification.

Check lifecycle and change status on the manufacturer's own site. Texas Instruments, for example, says its product change notifications cover changes that affect form, fit or function, or that could adversely affect quality or reliability. A cheap quote for an affected revision is not comparable until someone has read the notice.

Give each line one status:

• exact MPN, compliant
• approved alternate, compliant
• exception awaiting engineering approval
• partial quantity
• no bid

This stops a supplier's total looking low simply because the expensive or hard-to-find lines were left out.

Step 2: Verify the source and the stock, line by line

Ask whether each line is sold under the manufacturer's distribution agreement. ECIA's summary of SAE AS6496 describes authorised distribution as transactions carried out by a manufacturer-authorised distributor within the terms of that agreement, so a distributor authorised for one brand may be sourcing another brand on your quote through a different route. Status belongs to the line, not to the company name. The steps in checking that a distributor is authorised apply here.

For any stock claim, ask for the physical location and quantity, who owns it, the lot and date code, how it has been stored, which legal entity will ship it, and what warranty or failure-analysis support follows. Keep four categories apart: stock on the supplier's own shelf, stock allocated to the supplier, a factory lead time, and a marketplace listing nobody has confirmed.

If your policy allows independent stock, add the cost of the inspection and testing you would require. ECIA's June 2026 position paper on the authorised channel lists counterfeit parts, improperly stored or handled product and parts of unknown origin among the risks of grey-market buying. An independent offer is not the same product as authorised inventory until those risks are either priced or ruled out.

Step 3: Put every price in one currency

Choose one exchange rate and one rate date, approved by finance, and apply it to every foreign-currency quote. Do not accept each supplier's own conversion. If payment falls due weeks later, note the exposure, because a dollar quote paid in 60 days carries currency risk that a rupee quote does not.

Treat GST and other recoverable taxes separately from cost. If your entity takes input credit, IGST paid at import or GST on a domestic invoice is a cash-flow item, not a cost, and mixing it in will distort the comparison between imported and local offers.

Also compare price breaks at the quantity you will actually buy. A 10,000-piece price says nothing about a 1,000-piece requirement unless you have decided to take the extra parts.

Step 4: Rebuild every offer at your own dock

An EXW quote, an FCA quote and a delivered quote are three different scopes of work. ICC describes the Incoterms 2020 rules as allocating cost, risk and obligations between buyer and seller, and its guidance on using them recommends writing the rule, a precise named place and the year into the contract, for example "FCA Singapore Incoterms 2020". "FOB" on its own, or "delivered", is not enough to compare.

Bring every quote to the same point, your receiving dock, with this sum:

Landed cost of the order = goods value + freight + insurance + customs duty and clearance charges you cannot recover + bank charges + any inspection or testing you will add

Duty depends on the HSN classification, origin and the rates in force on the day, so get it from your customs broker rather than applying one percentage to every line. Calculating the landed cost of imported components walks through that part in detail.

Step 5: Account for MOQ, pack rounding and cash

A supplier can only sell in its minimum order quantity or standard pack, so the quantity you pay for may be more than you need.

Order quantity = requirement rounded up to the supplier's MOQ or pack multiple

Excess = order quantity minus requirement

Whether excess is waste depends on what happens next. If the same part goes into next quarter's build, extra parts are early stock. If the design changes in three months, they are a write-off. Check shelf life, the redesign plan and who will own the stock if your EMS holds it. Record NCNR (non-cancellable, non-returnable) terms, cancellation windows and payment days as well: a quote that takes your cash two months earlier costs more than its unit price suggests. The guide to managing MOQ in electronics manufacturing goes further on this.

A worked comparison in rupees

The figures below are illustrative. The exchange rate, freight, clearance and test costs are assumptions chosen to make the arithmetic easy to follow; they are not market rates. Suppose a buyer needs 4,500 of one active IC delivered to Pune, and finance has fixed ₹88 to the US dollar for this comparison.

Now rebuild each offer at the Pune dock, treating GST and IGST as recoverable:

• Supplier A: 5,000 × ₹184.80 = ₹9,24,000 of goods, plus an assumed ₹22,000 for freight and insurance, ₹30,000 for clearance and non-recoverable duty, and ₹3,000 bank charges. Total ₹9,79,000.
• Supplier B: 4,500 × ₹212 = ₹9,54,000, delivered. Total ₹9,54,000.
• Supplier C: 6,000 × ₹162.80 = ₹9,76,800 of goods, plus an assumed ₹30,000 for export pick-up, freight and insurance (EXW leaves export formalities to the buyer), ₹32,000 for clearance and duty, ₹3,000 bank charges, and ₹45,000 for the authentication testing your quality policy requires on independent stock. Total ₹10,86,800.

Divide by the 4,500 parts you need and the order flips:

• Supplier A: ₹9,79,000 ÷ 4,500 = ₹217.56 per required part, with 500 parts left over
• Supplier B: ₹9,54,000 ÷ 4,500 = ₹212.00 per required part, nothing left over
• Supplier C: ₹10,86,800 ÷ 4,500 = ₹241.51 per required part, with 1,500 parts left over

The lowest unit price, Supplier C, is the most expensive way to get 4,500 good parts. The real contest is between A and B. If the 500 extra parts from A will be used in the next build, A's cost per part bought is ₹9,79,000 ÷ 5,000 = ₹195.80, and A wins. If those parts are likely to sit unused, B wins and also ties up less cash. The answer comes from your demand plan, not from the quote sheet.

Step 6: Score what the price does not show

NIST's manufacturing extension programme warns that manufacturers often default to cost per unit and end up with a higher total cost of ownership than they need. Once landed cost is clear, score the rest with weights that suit the product. A starting point:

Write down what evidence earns each score. Full marks for delivery should mean confirmed physical stock or an acknowledged factory date, not a salesperson's estimate. Set disqualifiers that no score can override, such as an unapproved substitute, a prohibited source or missing traceability on a critical line.

Splitting the award

Splitting a line between two suppliers can protect continuity and keep both of them competitive, but it can also lose a price break, double the freight and leave you managing two lots. Run the single-source and split cases through the same sums before deciding. A split only makes sense when both suppliers are qualified and each share is large enough to matter to them. Once the comparison is done, the numbers become your brief for negotiating with the shortlisted distributors.

Whatever you decide, record the reasoning: approved exceptions, quantities per supplier, quote validity, the delivery schedule and the fallback if a supplier slips. That record is what lets the next buyer, or an auditor, understand why the award went where it did.

Before you release the purchase order

• Every supplier answered the same RFQ revision for the same destination
• Each line is the exact MPN, an approved alternate or a marked exception
• Authorisation is confirmed for that manufacturer and that line
• Stock is identified as physical, allocated or a lead time
• One exchange rate and date was used for every foreign quote
• Incoterm, named place and "Incoterms 2020" are written on each offer
• MOQ, pack rounding, NCNR and cancellation terms are costed
• Freight, clearance, duty, inspection and programming are either included or added
• Non-price scores rest on stated evidence
• The award reasoning and any exceptions are approved and filed

To find more suppliers to invite into the next round, browse component distributors on forUdyog, or describe the requirement on the QUICK RFQ page.