UMB Bank Positive Pay: How It Works and How to Build Your Check Issue File
UMB Bank offers positive pay to its business and commercial customers as a check fraud detection service. The bank describes it as a service that reviews check transactions to help confirm authenticity and accuracy, flagging any check whose details do not match the issue information you sent. Those flagged checks become exceptions that you review and either pay or return. To make this work, you send UMB a check issue file, a record of every check you wrote, so the bank knows what to expect when checks are presented.
This page explains how positive pay works at UMB, where it lives in the bank's online banking portal, and how to build a check issue file that matches what UMB expects. It does not invent a file spec. UMB gives you the exact layout at setup, and that layout can vary by account, so always confirm the format with your treasury contact before you rely on it.
Positive pay options at UMB Bank
UMB lists three positive pay variants for business customers in its risk management materials:
- Positive pay. The standard service. You upload a check issue file, UMB compares presented checks against it by account number, check (serial) number, and amount, and any mismatch is marked as an exception for you to review.
- Payee positive pay. An enhancement that, in UMB's words, validates the payee name on presented items when the payee name is included in the check issue file. If you want payee match, your file needs to carry the payee name field.
- Reverse positive pay. UMB positions this for businesses that do not have high check volume, cannot provide check issue files, or prefer more control. Here you review presented checks yourself and notify UMB of any exceptions, rather than sending an issue file up front. See positive pay vs reverse positive pay for how these two approaches differ.
UMB also offers an ACH block/filter service for electronic debits, which is separate from check positive pay. It helps ensure that only authorized ACH transactions post to your account.
Where positive pay lives in UMB's portal
UMB delivers positive pay through Premier Business Online Banking. The bank's online banking help documents a set of positive pay functions there, including the ability to upload an issued check file, manually enter a check, void a check, run a check search, view an issued check file processing log, and pull transaction and audit reports. Exceptions processing is handled in the same portal, where you make the pay or return decision on flagged items.
The issued check file processing log is worth knowing about. After you upload a file, this log tells you whether UMB accepted it and how many records it read. Check it after every upload so you catch a rejected or partially loaded file before checks start clearing. If your file is rejected, see why positive pay files get rejected.
What a UMB check issue file contains
UMB provides the precise check-issue file layout when you enroll, and it can differ from one account to the next. We are not going to print field positions or byte offsets we did not verify, because guessing those would cause your file to fail. What we can describe is the general shape of a positive pay check issue file, which is consistent across banks. Most layouts carry these fields per check:
- Account number for the checking account the check draws on.
- Check (serial) number, the unique number printed on the check.
- Amount, the dollar value. Some formats use a plain decimal like
1500.00and some use implied decimals where150000means $1,500.00. Confirm which UMB expects. - Issue date, the date the check was written.
- An action code that marks each row as issued or void, so voided checks are not honored.
- An optional payee name, required only if you use payee positive pay.
For a deeper walkthrough of these fields and how fixed-width and CSV layouts differ, see the positive pay file format reference and the positive pay glossary.
The upload workflow
The general flow inside Premier Business Online Banking looks like this:
- Print or export your check register for the period since your last upload.
- Build a file that matches UMB's required layout for your account.
- Sign in and open the positive pay area, then choose the option to upload an issued check file. You can also manually enter or void individual checks when needed.
- Confirm the file processed cleanly using the issued check file processing log.
- Each business day, review any exceptions UMB flags and submit your pay or return decisions before the bank's cutoff.
Watch your cutoff times. If you miss the exception deadline, UMB applies a default decision your service agreement specifies, which may be to pay or to return the item. Confirm your default and your daily cutoff with the bank.
Build a matching file from your check register
If your accounting software does not export a UMB-ready file, our free generator builds one. Open the positive pay file generator, paste or import your check register, and map your columns to account number, check number, amount, issue date, and an issued or void status. Using the custom format builder, you can match UMB's exact specification, whether it calls for CSV or fixed-width, a specific date format, or implied decimal amounts. Everything runs in your browser, so your check data never leaves your computer.
If you are new to the topic, what is positive pay covers the basics, and how positive pay stops check fraud explains why the issue file matters.
Verify your first file with the bank
Treat your first upload as a test. UMB sets the exact layout at enrollment and it can vary by account, so a file that loads at one company can fail at another. Send a small file, confirm it shows as accepted in the issued check file processing log, and have your UMB treasury contact verify the format before you depend on it. Once the bank confirms one file is correct, save those settings in the format builder and reuse them every cycle. For the official service description, see UMB's risk management and fraud prevention page.