Handling Invoice Pricing Discrepancies

The invoice just came in, and the price doesn’t match what you expected. Maybe it’s higher than the PO, different from the quoted price, or doesn’t align with your contract terms. Here’s how to investigate and resolve pricing discrepancies before you pay.

Common Causes of Pricing Discrepancies

Before assuming the vendor made an error, understand why prices might legitimately differ:

Price Increases

• Contract allows for annual price adjustments
• Quoted price expired before order was placed
• Fuel surcharges or material cost adjustments
• Currency fluctuation for international vendors

Quantity Differences

• More items shipped than ordered
• Weight-based pricing came in higher than estimated
• Minimum order quantity applied
• Overage allowance on manufactured items

Missing Discounts

• Volume discount not applied
• Early payment discount shown differently
• Promotional pricing expired
• Contract pricing not referenced on order

Additional Charges

• Shipping costs not included in quote
• Rush fees for expedited orders
• Setup or handling fees
• Taxes calculated differently

Honest Errors

• Wrong price list used
• Data entry mistake
• Old pricing not updated in vendor system
• Confusion between similar products

Step 1: Verify the Discrepancy

Before contacting the vendor, confirm there’s actually an error.

Compare Against Your Records

Check the Details

• Unit price vs. extended price: Is the error in the per-unit price or the multiplication?
• Quantities: Did they ship what you ordered?
• Item numbers: Are they billing for the correct product?
• Date references: Is the price period-specific?

Calculate the Variance

Invoice Amount:      $5,250.00
Expected Amount:     $5,000.00
Variance:            $250.00 (5%)

Know your company’s tolerance threshold. Many organizations have a tolerance (often 1-5%) for minor variances, below which discrepancies aren’t disputed.

Step 2: Gather Supporting Documentation

Compile everything you’ll need to make your case:

Essential Documents

• The invoice: Highlight the disputed charges
• Purchase order: Shows what was authorized
• Quote or estimate: Proves the expected price
• Contract: Confirms negotiated terms
• Receiving document: Confirms what was actually delivered

Additional Support

• Email correspondence about pricing
• Previous invoices showing correct pricing
• Price lists or catalogs (dated)
• Approval for any changes

Step 3: Contact the Vendor

Reach out to your vendor contact or their billing department. Be specific and factual.

Sample Dispute Email

Subject: Pricing Discrepancy - Invoice #[Number] - Request for Review

Dear [Vendor Contact],

I’m reviewing Invoice #[Number] dated [Date] and found a pricing discrepancy I’d like to clarify.

The Issue: - Invoice shows: [Item] at [$X] per unit - Our PO #[Number] authorized: [$Y] per unit - Variance: $Z

Supporting Documentation: - PO #[Number] dated [Date] - authorized $[Y] per unit - [Quote/Contract reference if applicable]

Could you please review and either: 1. Confirm the correct pricing and issue a corrected invoice, or 2. Explain the reason for the price difference

I’ve attached the PO and invoice for your reference. Please let me know if you need any additional information.

We’d like to resolve this before processing payment. Thank you for your prompt attention.

Key Points to Include

• Specific invoice number and date
• Exact variance amount
• Reference documents (PO, quote, contract)
• Clear request for resolution
• Timeline expectation

Step 4: Evaluate the Vendor’s Response

The vendor will typically respond in one of these ways:

“You’re right—we’ll issue a credit”

Best outcome. Get the credit memo before processing any payment, or pay the undisputed amount only.

“The price increase was communicated”

Ask for documentation. Check your records. If they notified you properly per your contract terms, you may need to accept the increase.

“This is the current price”

If your PO shows a different price, that’s a contract. Politely but firmly point to the authorized amount.

“Additional charges apply”

Review whether these charges were disclosed upfront. Undisclosed fees are negotiable.

“There was an error in your PO”

If your PO had the wrong price and they never agreed to it, this gets complicated. Review any acknowledgment or confirmation they sent.

Step 5: Resolve and Document

If You Agree with Their Explanation

• Update your records with current pricing
• Note the explanation for future reference
• Process payment

If They Issue a Credit

• Receive the credit memo before paying
• Or pay the corrected amount only
• Document the resolution

If You Can’t Agree

Options for unresolved disputes:

1. Pay undisputed amount: Pay what you authorized, hold the variance
2. Escalate internally: Involve purchasing or management
3. Escalate at vendor: Request supervisor or account manager review
4. Formal dispute: Put the dispute in writing with a deadline
5. Contract review: Have legal review your obligations

Always Document

Keep records of: - The discrepancy and amount - Communications with vendor - Resolution and any credits - Changes to future pricing

Preventing Future Discrepancies

At Order Time

• Get quotes in writing with validity dates
• Issue POs for all orders (even to regular vendors)
• Specify pricing explicitly on POs
• Reference contract numbers on orders

Before Payment

• Three-way match: PO, receiving document, invoice
• Set variance tolerances and exception workflows
• Flag invoices that don’t reference a PO
• Review vendor price lists regularly

Vendor Management

• Require advance notice of price changes
• Include price protection clauses in contracts
• Conduct periodic price audits
• Compare pricing across vendors for key items

Controlled Invoice Intake

When vendors can submit invoices however they want—email, mail, portal—discrepancies are harder to track. A consistent submission process captures PO references and flags mismatches before invoices enter your approval workflow.

Pricing Discrepancy Thresholds

Consider implementing thresholds to handle discrepancies efficiently:

Adjust thresholds based on your company size and transaction volumes.

Key Takeaways

• Verify the discrepancy against POs, quotes, and contracts before disputing
• Be specific and provide documentation when contacting vendors
• Understand legitimate reasons prices might differ
• Don’t pay until discrepancies are resolved (or pay undisputed amount only)
• Document everything for future reference

Want to catch pricing mismatches before invoices reach your approval queue? See how BillerPlus validates invoice data at intake →