The short answer
If your wedding invoice does not match the quote, work out the exact difference and trace each dollar of it to a line: a rate, a count, a new charge, a percentage on a different base, or a missing credit. Then compare each cause with your signed contract and any written changes, and ask the vendor in writing about anything you cannot match.
Why is my wedding invoice higher than the quote?
A difference is not automatically an error. The quote may have been written before you signed, and the contract, a later addendum or an email you approved may have changed the terms. The guest count may have moved. A quote that said "plus tax" or "plus service charge" may have left those amounts out of the figure you remember.
Other causes are worth questioning: a per-person rate that changed without a document behind it, a line you did not ask for, a percentage applied to a larger base than the contract states, a deposit that has not been credited, or a simple arithmetic slip. The point of tracing the difference is to sort it into these groups.
- A change you approved in writing
- A guest count or quantity change
- A rate that differs from the contract
- A new line not in the contract
- A service charge or tax on a different base
- A deposit or payment not credited
- An arithmetic error
Which document should I compare the invoice with?
Compare it with the latest terms you agreed to, not only the first quote. Gather the quote, the signed contract, any addenda or change orders, emails in which you approved a change, and the final count you submitted. Put them in date order. The latest signed or approved term for each item is the figure to check.
Some contracts say which document controls if they conflict, or state that the signed agreement replaces earlier quotes and discussions. Read that clause if yours has one. If it is unclear whether a quoted price still applies, ask the vendor to point to the document the invoice figure comes from.
How do I find where the difference comes from?
Set the quote or contract and the invoice side by side, line by line, in a worksheet like the one below. For each line, record the quantity, the unit price and the line total from both documents, then the difference. A line on the invoice that has no match on the contract gets its own row.
Then recalculate the percentages. Find the base the contract says each percentage applies to, such as food and beverage only, or food, beverage and rentals, and apply the rate to that base yourself. Do the same for sales tax. When the line differences plus the percentage differences add up to the total difference, you have accounted for all of it.
How to trace an invoice difference line by line: an example
For example, take a hypothetical catering quote: 120 guests at $85, or $10,200, a 22% service charge of $2,244, and 7% tax on $12,444, which is $871.08. The quoted total is $13,315.08. The invoice shows 120 guests at $89, or $10,680, a service charge of $2,349.60, a new $600 bar upgrade line, and tax of $954.07 on $13,629.60. The invoice total is $14,583.67, which is $1,268.59 more.
Now trace it. The rate change is 120 x $4 = $480, plus the 22% service charge on it, $105.60. The bar line adds $600. Tax on the added $1,185.60 is $82.99. And $480 + $105.60 + $600 + $82.99 = $1,268.59, so the whole difference is explained. Two questions remain: what document supports $89, and did you order the bar upgrade.
How do I raise an invoice discrepancy with a vendor?
Write, rather than call, so you have the exchange on record. Keep it specific: name the invoice number and date, the line, the figure on the invoice, the figure in your contract or addendum with its page, and the difference. Ask the vendor either to send a corrected invoice or to point you to the document that supports the invoiced figure.
Separate the items you agree with from the ones you are asking about, so the vendor can see what is not in question. Ask for a reply by a date that leaves time before the payment is due. Before holding back any payment, read what the contract says about late or missed payments, and ask the vendor how they want to handle the amount under discussion.
What if the vendor says the higher price is allowed?
Ask for the section of the contract they are relying on. A contract may include a price increase clause, a rate that depends on the final count, or a term that lets the vendor pass on certain costs. Read the wording yourself and check whether its conditions were met, such as notice by a certain date or a cap on the increase.
If you accept the explanation, ask for the revised figures in a corrected invoice or signed addendum and update your budget. If you still disagree, keep the correspondence together. Rules on what a vendor may charge vary by state and by contract; for a significant amount, a qualified attorney licensed in your state can review the documents.
Quote-to-invoice comparison
Use one row for a decision or deliverable. Keep unanswered items visible. Download the blank worksheet to open in Excel, Numbers or Google Sheets.
On a small screen, swipe the worksheet sideways to see the remaining columns.
| Line | Quote or contract figure | Invoice figure | Difference | Cause and supporting document |
|---|---|---|---|---|
| Per-person or package price | — | — | — | — |
| Guest count or quantity | — | — | — | — |
| Add-ons and upgrades | — | — | — | — |
| Lines not in the contract | — | — | — | — |
| Service charge (rate and base) | — | — | — | — |
| Sales tax (rate and base) | — | — | — | — |
| Deposits and payments credited | — | — | — | — |
| Total due | — | — | — | — |
A message you can make your own
Change the wording to suit you, fill in anything in brackets and keep the questions that apply. You decide what to send and send it yourself.
Thank you for sending invoice [number] for our wedding on [date]. We have compared it with our signed agreement dated [date] and have questions about two lines. The per-person price shows [amount], while section [number] of our agreement shows [amount]. The invoice also includes [line] for [amount], which we do not find in our agreement or later changes. Could you send a corrected invoice, or point us to the document that supports these figures? The other lines match our records.
Common questions
Can a wedding vendor charge more than the quoted price?
A wedding vendor can charge more than the quoted price only as your signed contract and any later written changes allow, for example through a price increase clause or a rate tied to the final count. A quote alone may not fix the price. Ask the vendor to point to the document behind the invoiced figure, and check whether its conditions were met.
Is a wedding quote binding?
Whether a wedding quote binds the vendor depends on its wording, on the signed contract and on state rules, which vary. Check the contract for a clause about which document controls or whether it replaces earlier quotes. Compare the invoice with the latest terms you signed or approved in writing, and ask the vendor to confirm the order if it is unclear.
Why is the service charge higher than on my quote?
A service charge higher than on the quote means either the base grew, because a rate, count or line changed, or the percentage is applied to a different base than the contract states. Recalculate the charge on the base your contract names, compare it with the invoice, and ask the vendor about any gap that remains.
Should I pay the invoice while I wait for an answer?
Paying a disputed invoice while you wait for an answer is your decision. Check what the contract says about late or missed payments first, and ask the vendor in writing how they want to handle the amount in question before the due date passes. Paying the undisputed part and keeping a record of what is under discussion is one option to raise with them.
What if the invoice is lower than the quote?
An invoice lower than the quote deserves the same check as a higher one. A lower total may mean a line is missing and could be billed later, or that a deposit or credit was applied twice. Trace the difference line by line, then ask the vendor to confirm in writing that the invoice is final and complete.
How do I check the math on a wedding invoice?
To check the math on a wedding invoice, multiply each quantity by its unit price, add the lines, then apply each percentage, such as a service charge or sales tax, to the base your contract states. Subtract each deposit and payment you have made. The guide to checking a wedding invoice before paying walks through each step in order.