Duplicate Transaction Finder
Detect accidental double billings, repeated payment debits, and identical transaction records across statement files.
Click or drag & drop bank statement CSV or Excel (.xlsx)
Supports files up to 30MB with Date, Description, Debit, Credit, and Balance columns
Analyzing transactions with institutional-grade precision...
Calculation & Analysis Results
Execution completed successfully
Calculation Methodology & Formula
Exact Duplicates: Same Date + Amount + Description + Ref. Probable Duplicates: Same Amount + Similar Merchant Name within ±N days.
Arithmetic is calculated using institutional-grade fixed-point precision with exact 2-decimal financial rounding. Standard binary floating-point drift is strictly prevented across all transaction volumes.
Supported Inputs & Limitations
Supported: CSV or XLSX files containing date, narration, and amount fields.
Limitations: Flags potential duplicates for human review; legitimate recurring charges (like twin subscriptions) are categorized separately.
Audit Statements for Tampering and Duplicates
Trade Cost Pro's 7-tier forensic engine audits bank PDF metadata, font tampering, and balance breaks automatically.
Frequently Asked Questions
Will this delete duplicate transactions from my file?
No. The tool flags duplicates and groups them visually in a downloadable audit report with an option to download a deduplicated file.
How does it distinguish legitimate repeated payments from mistakes?
Legitimate recurring debits typically occur on the same day every calendar month, whereas accidental double billings happen within 0–48 hours.
Related Financial Utilities
Bank Statement Balance Checker
Identify running-balance mismatches, missing transactions, and closing balance discrepancies with fixed-point precision.
Debit & Credit Totals Calculator
Calculate total debits, total credits, net cash movement, and monthly distribution totals with financial sign conventions.
Recurring Payment & Subscription Finder
Detect hidden monthly subscriptions, recurring SaaS fees, insurance premiums, and auto-debit payments.