BankFileKit

Mechanics Bank Positive Pay file

Works with your QuickBooks report exactly as exported. No cleanup.

Turn your QuickBooks Check Detail report or Excel check list into the check issue file Mechanics Bank accepts.

Built from Mechanics Bank's published spec · Read 10/29/2026 · Source

Make your Mechanics Bank file Try it with a sample file

What Mechanics Bank receives

The Mechanics Bank file BankFileKit makes from a sample QuickBooks report with fake checks. You see this proof for your own file before anything leaves your browser.

File proof

Mechanics Bank , Issued check file, tab delimited

positive-pay-mechanics-20261026.txtCreated 10/26/2026 (example)

File check: Passed

1001	Example Office Supply Co.	10/1/2026	1688.12	I1002	Example Janitorial, LLC	10/2/2026	6895.24	I1003	Example Property Mgmt LLC	10/3/2026	450.00	V1004	Example Employee One	10/15/2026	2104.50	I1005	Example Construction and Landscaping Services of Northern County	10/20/2026	12500.00	I

4 checks$23,187.861 void

Compare these totals with your QuickBooks report.

  1. Line 1. One check per line: check number, payee, issue date, amount and issue/void code, in this order.

  2. Line 3. A voided check, marked V, with its original amount. QuickBooks shows voids as $0.00, so BankFileKit asks you for the original amount.

Set it up once at Mechanics Bank

Note: Already have a Mechanics Bank import map?

Your file has to match the map you upload it with. Add a new map with the settings below, or use My bank isn't listed to make a file that matches the map you have.
  1. In Mechanics Bank's Positive Pay system, open the Client/User Setup menu, select File Mapping, then Add New.
  2. Profile name: anything you'll recognize, for example BankFileKit. File Format: Delimited Text. Delimiter: Tab. Select File: choose a file you downloaded from BankFileKit, then select Next.
  3. Leave File Does Not Contain Issued Date, First Row Contains Column Names, Skip Rows at Beginning and Skip Rows at Ending unchecked. File Totals Options: Do Not Require File Totals. Select Next.
  4. Check Number: Column 1. Issued Payee: Column 2. Issued Date: Column 3, with Dates in file do not include separators unchecked. Amount: Column 4, with Insert Decimal Point unchecked.
  5. Record Type: Column 5, with Convert Negative Amounts to Voids unchecked. Issued Item Code: I. Void Item Code: V. Leave Stop Pay Item Code blank. Select Next, check the summary and select Save.
  6. To send a file: open Transaction Processing, then Submit Issued Check File. Choose the file, your account in Account Nickname and this mapping in File Mapping Format, then select Process File.

What's in the file

What each check line holds, in the Mechanics Bank file
ColumnFieldExampleRules
1Check number1001Digits only, up to 15.
2PayeeExample Office Supply Co.Exactly as printed on the check.
3Issue date10/1/2026M/D/YYYY.
4Amount1688.12Dollars and cents with a decimal point. No $ or commas. Up to $99,999,999.99.
5Issue/void codeII for issued checks, V for voids.

.txt file · Tabs between fields · No header row · Windows line endings

Good to know

  • Mechanics Bank's Positive Pay system lets you map your own file. This layout uses check number, payee, issued date and amount, plus a record type with I for issued and V for void.
  • You choose the account when you upload, so each file is for one account.
  • If you use Payee Match, the payee name must match the printed check exactly, including titles and words like Mr., Mrs., and, or and &.
  • Check exceptions must be reviewed and approved by 12:00 PM PT each business day.

Where Mechanics Bank's guide doesn't say

BankFileKit fills these in with safe defaults. Your test file confirms them with Mechanics Bank before you send a live file.

  • BankFileKit default: Column order and I and V codes are BankFileKit's choice. Mechanics Bank's guide doesn't show an example file.
  • BankFileKit default: Tab between fields, so commas in payee names never split a column. Mechanics Bank's screen also offers comma, space and semicolon.
  • BankFileKit default: Dates like 10/1/2026 (month and day without leading zeros), as in the example on the mapping screen.
  • BankFileKit default: Voided checks carry the original check amount.
  • BankFileKit default: Check numbers up to 15 digits and amounts up to $99,999,999.99. Mechanics Bank's guide doesn't publish limits.
  • BankFileKit default: No limit on payee name length. Mechanics Bank's guide doesn't publish one.
  • BankFileKit default: File extension .txt. Line endings: Windows (CRLF). Text: plain ASCII.

Note: Send a test file to Mechanics Bank first

Before your first live file, download the free test file with your first 3 checks, send it to Mechanics Bank, and confirm it was accepted. BankFileKit can't guarantee that Mechanics Bank will accept a file.

Source

BankFileKit isn't affiliated with or endorsed by Mechanics Bank.

Other banks

See every bank, or set up your own layout if your bank uses a different one.