A supplier that cannot pay its own bills will eventually fail to ship yours. Year-end is the natural time to review supplier financial health: budgets for the coming year are being set, contracts are renewing and new awards are being made. The goal is not to turn buyers into credit analysts. It is to collect a small, consistent set of evidence, read it for trend and direction, and decide whether the exposure justifies a mitigation.

Start With the Documents

Ask for the following before an award or renewal, and ask every shortlisted supplier at the same time so the comparison is fair:

  • Two to three years of financial statements: income statement, balance sheet and cash flow statement, ideally audited or reviewed by an outside accountant.
  • The most recent interim statements, since year-end numbers can be many months old.
  • A list of principal lenders and the status of any credit facility, including covenant compliance.
  • Any auditor’s notes, including a going-concern paragraph.
  • Customer concentration: what share of revenue comes from the largest customer, and what happens if it leaves.

Private suppliers often will not share full statements. Offer a non-disclosure agreement, accept a summary signed by an officer, or use a commercial credit report as a second source. A flat refusal to share anything is itself information, especially on a large or sole-source award.

The Ratios Worth Checking

Use a short list and look at direction across periods, not a single number.

  • Liquidity. Current assets divided by current liabilities. A ratio drifting down over several periods suggests tightening cash.
  • Leverage. Debt relative to equity or to earnings. Rising debt with falling earnings is a stronger signal than either alone.
  • Cash flow. Persistent negative operating cash flow, or reliance on outside financing to cover day-to-day operations, is a standard warning sign.
  • Payables. Days payable outstanding that keeps lengthening can mean the supplier is stretching its own vendors to preserve cash. Compare against industry norms and the supplier’s own history.
  • Composite scores. The Altman Z-score combines several ratios into one number and was developed for publicly traded manufacturers. A variant exists for private firms with different cutoffs, so use the version that matches the supplier and treat the result as a prompt for questions, not a verdict. A decline over several quarters tells you more than one low reading.

Warning Signs Outside the Statements

Financial statements lag. Supplement them with signals you can see yourself:

  • Requests for earlier payment, deposits or changed terms.
  • Slipping lead times or quality on formerly stable items, which can follow deferred maintenance or lost staff.
  • Turnover in finance, sales or plant leadership.
  • Late payments reported by other buyers, or liens and judgments in public records.
  • A credit rating downgrade, where the supplier is rated.
  • The supplier’s own material vendors moving it to cash-in-advance terms.

Who Owns the Review

Supplier financial reviews fail most often because nobody owns them. Assign one named person in procurement or supplier quality to collect documents, record indicators and call the review meeting, and agree in advance with finance on who can interpret an unclear result. Keep the findings in the same place as the supplier’s quality and delivery scorecards so that a financial concern is visible next to a late-delivery trend. Document the decision either way: if you proceed with a weak supplier, record the mitigation you chose and why.

Match the Depth of Review to the Exposure

Not every supplier deserves the same effort. Sort them by how much damage a failure would cause: sole-source parts, long qualification times, tooling you cannot move easily and customer-facing delivery commitments raise the stakes. For low-spend, easily replaced items, a credit report may be enough. For critical suppliers, review statements annually and interim figures quarterly.

A single year of statements can mislead. A supplier may look healthy because it just sold an asset, delayed a capital purchase or collected a large receivable. Put three years side by side and ask what changed. Revenue growing while cash flow shrinks can mean the supplier is buying growth with discounts or extended terms. Margins falling while debt rises can mean rising input costs that the supplier cannot pass through. Ask the supplier’s finance contact to walk you through the biggest change from year to year; a clear, documented explanation is a good sign, and vague answers are not.

Context matters as well. Compare the supplier with others in its industry and size band, because a ratio that looks weak for a software firm may be normal for a capital-intensive metal fabricator.

Acting on a Weak Result

A weak result is a prompt for mitigation, not automatic disqualification.

  1. Ask the supplier directly about the specific ratio or trend, and ask for supporting documents.
  2. Shorten the exposure. Reduce deposits, pay against milestones and avoid large prepayments.
  3. Protect tooling and inventory. Document ownership of tooling and consider holding safety stock or consigned inventory.
  4. Qualify a backup. Begin qualifying an alternate source for critical parts before you need one.
  5. Set a re-review date and the trigger events that would move it forward.

Takeaway

Pick the suppliers that matter most for 2027, send each the same document request this quarter, record four or five indicators in one sheet and note the direction each moved. Escalate any supplier showing more than one adverse trend, and write the next review date beside each name before the year closes.