Overview
Bank Statement Parser is the only open-source Python library that parses six bank statement formats with a unified API. Single-format libraries (mt-940, ofxparse, pycamt) each handle one format. SaaS tools (Ocrolus, Parseur) offer OCR for PDFs but require sending data externally and cost $49–$1,000+/month.
Open-Source Alternatives
Single-Format Libraries
Most open-source bank statement parsers handle one format only. If you need multiple formats, you must install and maintain separate libraries with different APIs, output schemas, and update cycles.
| Library | Format | Output | Streaming | PII Redaction | Deduplication |
|---|---|---|---|---|---|
| Bank Statement Parser | 6 formats | pandas DataFrame | Yes | Yes (default) | Yes |
| mt-940 (WoLpH) | MT940 only | Python objects | No | No | No |
| ofxparse | OFX only | Python objects | No | No | No |
| pycamt | CAMT.053 only | Python objects | No | No | No |
| ofxtools | OFX v1/v2 only | Python objects | No | No | No |
vs pyiso20022
pyiso20022 generates Python dataclasses from the full ISO 20022 schema catalogue. It is a general-purpose ISO 20022 toolkit for working with PACS, PAIN, CAMT, and ADMI messages.
Bank Statement Parser is purpose-built for parsing bank statements into DataFrames with production features:
| Feature | Bank Statement Parser | pyiso20022 |
|---|---|---|
| Purpose | Statement parsing + export | ISO 20022 schema toolkit |
| Output | pandas/Polars DataFrames | Python dataclasses |
| Formats | 6 (including non-ISO) | ISO 20022 only |
| Streaming | Yes (bounded memory) | No |
| PII redaction | Built-in | No |
| Deduplication | Built-in | No |
| ZIP security | Built-in | No |
| CLI | Yes | No |
Use pyiso20022 if you need to work with the full ISO 20022 message catalogue. Use Bank Statement Parser if you need to parse bank statements into structured data for analysis, reconciliation, or reporting.
SaaS Alternatives
SaaS tools like Ocrolus, Parseur, and Sensible offer bank statement parsing as a cloud service. They typically use OCR to handle scanned PDFs and support hundreds of bank-specific formats.
| Feature | Bank Statement Parser | SaaS Tools |
|---|---|---|
| Data privacy | 100% local, zero network calls | Data sent to cloud |
| Cost | Free (Apache 2.0) | $49–$1,000+/month (as of Q1 2026) |
| Formats | 6 structured formats | Hundreds (via OCR) |
| PDF support | No (structured formats only) | Yes (OCR-based) |
| Latency | <2 ms first result | 1-30 seconds |
| Throughput | 27,000+ tx/second | API rate-limited |
| Vendor lock-in | None | Yes |
| Compliance | Local processing, SBOM | Varies by provider |
LLM-Based Parsers
A growing number of tools (Inscribe, Unstract, Mozilla.ai blueprints) use large language models to parse bank statements, including scanned PDFs. When Chase redesigned their consumer statement format in late 2025, template-based parsers broke while LLM parsers adapted automatically.
When LLM parsers make sense: You receive scanned PDFs from hundreds of banks with unpredictable layouts, and approximate extraction (95-99% accuracy) is acceptable.
When Bank Statement Parser is the better choice: You need deterministic, reproducible output for audit and compliance. You cannot send financial data to external APIs. You need sub-millisecond latency (vs 1-30 seconds for LLM APIs). You want zero ongoing cost and no vendor dependency.
Bank Statement Parser and LLM tools solve different problems. Use Bank Statement Parser for structured formats (XML, CSV, OFX, MT940) where you need 100% accuracy, local processing, and audit reproducibility. Use LLM tools for unstructured PDFs where approximate extraction is acceptable.
Benchmark methodology: Performance figures measured on Apple M2, Python 3.12, using a 5,000-transaction CAMT.053 file (2.1 MB). Results averaged over 100 runs. Reproduce locally: python -m bankstatementparser.bench. SaaS latency based on published API documentation as of April 2026.
When to choose Bank Statement Parser: Your bank provides structured exports (XML, CSV, OFX, MT940), you need local processing for compliance, or you want zero ongoing cost.
When to choose SaaS: You receive scanned PDF statements, need OCR for hundreds of bank-specific formats, or want a no-code solution.
See real-world use cases ❯ | Plan your MT940-to-CAMT migration ❯