Positive Pay Glossary: Check-Fraud and Check Issue File Terms
Positive pay has its own vocabulary, and banks rarely define the terms before they ask you to upload a file. This glossary covers the words you will see in bank portals, treasury setup forms, and file specs. Definitions are short and alphabetical. For a fuller walkthrough of how the service works, read what is positive pay.
A
ACH positive pay
A separate fraud control for electronic (ACH) debits, not paper checks. You set rules or a list of approved originators, and the bank flags or blocks ACH debits that do not match. It answers the same question as check positive pay, but for money pulled from your account electronically.
C
Check issue file
The list of checks you send to your bank so it knows which checks are legitimate. Each row usually carries the account number, check number, amount, issue date, and often the payee name. The bank compares every check presented for payment against this file. This is the file PositivePayMaker builds from your check register, and "check issue file" and "positive pay file" mean the same thing at most banks.
E
Exception item
A check the bank could not match to your check issue file. Common causes: a check that was never uploaded, an altered amount, a duplicate check number, or a payee name that does not match. The bank holds exception items and asks you to pay or return each one, usually by a same-day cutoff.
F
FITID
A unique transaction identifier used in OFX and QFX bank files (the "Financial Institution Transaction ID"). You will not see FITID in most positive pay layouts. It shows up when you export transactions from online banking in OFX/QFX format, and some converters use it to avoid importing the same transaction twice.
Fixed-width
A file format where every field sits at an exact character position instead of being separated by commas. A check number might occupy positions 11 through 20, padded with spaces or zeros to fill the width. Many older bank positive pay specs are fixed-width, which is why a single missing space can make a bank reject the file. The file validator checks field positions and lengths before you upload.
I
Implied decimal
A way of writing an amount with no decimal point, where the last two digits are always cents. So 105000 means $1,050.00 and 000099 means $0.99. Several bank check issue formats require implied decimal, and getting it wrong by a factor of 100 is one of the most common upload errors.
N
NACHA
The National Automated Clearing House Association, the nonprofit that administers the ACH Network and writes the NACHA Operating Rules that govern ACH payments in the United States. The term comes up around ACH positive pay and ACH debit blocks, not paper check files. A "NACHA file" is the standardized format banks use for ACH batches.
P
Payee positive pay
Standard positive pay plus a check of the payee name. The bank reads the payee printed on the check and compares it to the name in your check issue file, so it can catch a fraudster who changed "ABC Supply" to "ABC Supplies LLC." Payee positive pay requires the payee name column in your file, so make sure your register includes it.
Positive pay
A bank fraud-prevention service. You send the bank a list of checks you issued, and the bank only pays checks that match that list on account number, check number, and amount. Anything that does not match becomes an exception item for you to approve or return. It is the most effective defense against altered and counterfeit business checks.
R
Reverse positive pay
The mirror image of standard positive pay. Instead of you sending the bank your issued-check list, the bank sends you a daily list of checks presented for payment, and you flag any that should not be paid. It puts more work on you and catches less, because the bank has no issued list to match against. Standard (or "forward") positive pay is the stronger option for most businesses.
T
Treasury management
The bank department and product suite that handles business cash services: positive pay, ACH origination, wire transfers, account reconciliation, and lockbox. When a bank tells you to "enable positive pay," the request usually routes through treasury management, and the file specs you need often live in their treasury onboarding documents.
How these terms fit together
In practice, the flow is short: you issue checks, you send a check issue file to your bank's treasury management team, and positive pay matches each check against that file. Anything that fails becomes an exception item you review. If you turn on payee positive pay, the match also covers the payee name. The format of the file (often fixed-width with an implied decimal amount) is set by your specific bank.
Two reminders that save real money. First, QuickBooks cannot export a positive pay file on its own, and neither can most other accounting tools, so you need a converter between your register and the bank. Second, every bank's layout differs: a file that works at Chase will not load at Huntington without changes. Always upload your first generated file and confirm with your bank that it accepted it before you rely on the process.
PositivePayMaker is a free, browser-based tool that turns your check register into your bank's check issue file. Your check data never leaves your browser. It includes 11 bank layouts, a custom format builder, and a validator.