Scrub DFI Account Numbers (Cols 13-29), ABA Routing Transit Numbers (Cols 04-12), Receiver Tax IDs (Cols 40-54), and Individual Names (Cols 55-76) from 94-character fixed-width NACHA ACH (CCD/PPD/CTX) files 100% in local browser RAM while preserving 94-byte column alignment and Batch/File Control entry hash totals.
Process and sanitize Nacha Ach payloads 100% privately inside browser memory
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Supports CSV, JSON, TXT, XML & Log Streams
Core capabilities built into NACHA ACH Batch File Scrubber Local Studio
Masks DFI Account Numbers (positions 13-29), Individual IDs (40-54), and Receiver Names (55-76) inside Type 6 Entry Detail records while strictly preserving exact 94-byte ASCII line lengths so bank parser validation never fails.
Replaces sensitive Originating/Receiving DFI Routing Numbers (positions 04-12) with valid 9-digit ABA test routing numbers that pass standard [3, 7, 1] Modulo-10 check-digit verification.
Recalculates Batch Control (Record Type 8) and File Control (Record Type 9) 10-digit Entry Hash sums and total debit/credit dollar controls in memory so scrubbed ACH fixtures pass core banking ingestion.
Processes payroll PPD and corporate CCD/CTX treasury batches entirely inside ephemeral client-side browser memory with zero network egress to external cloud servers.
Zero configuration, zero cloud server dependencies, instant execution.
Load any standard NACHA PPD, CCD, WEB, or CTX batch file directly into local browser memory—zero server upload.
Choose between Last-4 DFI Account masking, Standard DFI + Name + Tax ID scrubbing, or Full Safe-Harbor ABA Routing + Control Hash anonymization.
Verify side-by-side in the live Canvas 2D matrix that every Type 1/5/6/7/8/9 record maintains exact 94-character width and valid ABA checksums.
Copy or download the 70% free sanitized ACH batch immediately, or unlock the $19 air-gapped Offline PRO HTML5 Workstation.
See why merchants and prosumers switch from monthly subscriptions to our local buyout.
| Feature / Metric | 🛡️ NACHA ACH Batch File Scrubber | ☁️ Cloud SaaS (ModernTreasury) |
|---|---|---|
| Execution & Data Privacy Architecture | 🛡️ Standardized | ☁️ Cloud Sync |
| 94-Character Fixed-Width Column Integrity | 🛡️ Standardized | ☁️ Cloud Sync |
| ABA Mod-10 & Type 8/9 Entry Hash Sync | 🛡️ Standardized | ☁️ Cloud Sync |
| Air-Gapped Offline HTML5 Appliance | 🛡️ Standardized | ☁️ Cloud Sync |
Eliminate vendor lock-in and cloud upload security risks.
Why pay monthly recurring SaaS fees for simple nacha ach tools? Switch to NACHA ACH Batch File Scrubber for a single $19 buyout.
ModernTreasury uploads private data to cloud servers. We process 100% locally on your machine.
Process large nacha ach files instantly without waiting for cloud server roundtrips.
Eliminate daily export limits and resolution caps with unlimited local nacha ach processing.
Deep technical breakdown driving our client-side productivity engine.
Standard regex replacement changes string lengths, shifting fixed-width columns in Type 6 Entry Detail records and causing immediate core-banking parser rejection. Column-locked padding guarantees every record remains exactly 94 ASCII characters.
Core payment gateways validate the 9th check digit of every Receiving DFI Identification and sum the first 8 digits across all Type 6 records against Record Type 8/9 Entry Hashes. Our in-browser engine keeps both mathematically consistent.
Batch Header (Type 5) records contain 10-character Company Identification EINs (Cols 41-50) and Type 705 Addenda records carry raw invoice PII. Both are deterministically masked in RAM.
Uploading raw payroll or vendor ACH files to cloud formatters exposes live bank account and routing numbers. Local browser execution ensures 0 bytes ever leave your workstation.
No monthly bills. No sneaky price hikes. Pay once, use forever.
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Everything you need to know about privacy, local memory execution, and buyouts.
Never. Our engine operates on exact NACHA column slices (e.g., Cols 13-29 for DFI Account Number, Cols 40-54 for Individual ID, Cols 55-76 for Individual Name) and pads or truncates every replacement to the exact field width so every line remains strictly 94 bytes.
No. 100% of parsing, ABA routing checksum calculation, and DFI account masking execute locally inside your browser's memory (RAM). Zero network requests are made with your payload.
When Receiving DFI routing numbers (Cols 04-11 of Type 6 records) are anonymized in Safe-Harbor mode, the engine automatically recalculates the 10-digit Entry Hash in Record Type 8 (Cols 22-31) and Record Type 9 (Cols 22-31) so bank file validators pass without checksum errors.
The Free Sandbox lets you interactively scrub, copy, and download the first 70% of records in browser RAM. The €3.99 7-Day Sprint Pass unlocks 100% unblurred browser export, and the $19 One-Time Commercial Buyout includes the self-contained air-gapped Offline PRO HTML5 Workstation with 4 specialized NACHA batch modes.