The Karchu blog
Practical guides on bank statement analysis, transaction categorization, and building a real understanding of your money. No fluff, no fake life-hacks - just the workflows we’ve seen work.
- July 27, 2026 · 12 min read
How to categorize a bank statement (that actually stays clean)
The playbook for categorizing bank statements: taxonomy, rule ordering, retroactive edits, and audit trails.
Read - July 27, 2026 · 11 min read
Receipt OCR, explained: how software reads a receipt
The receipt OCR pipeline, why totals get wrong, and how modern extractors combine layout, language models, and math checks.
Read - July 27, 2026 · 13 min read
PDF bank statement parsing: how it really works
From text extraction to running-balance reconciliation. Failure modes, tricks, and honest limits.
Read - July 27, 2026 · 11 min read
Credit card statement automation for individuals and finance teams
Why credit cards are different from bank statements, the parsing quirks, and the reconciliation loop that actually saves time.
Read - July 27, 2026 · 12 min read
Bookkeeping automation, end to end
What to automate in bookkeeping, what to leave manual, and how to stitch parsing, categorization, receipts, and reconciliation into one clean loop.
Read - July 27, 2026 · 11 min read
AI bookkeeping: what is real and what is marketing
What AI actually does well in a bookkeeping loop, where it fails, and how to keep an auditable trail with a probabilistic model in the middle.
Read - July 27, 2026 · 12 min read
Small business bookkeeping: a practical guide
Chart of accounts, monthly cadence, statement handling, receipts, tax prep, and the automation that pays off first.
Read - July 27, 2026 · 10 min read
Expense categorization for individuals and businesses
Designing categories that answer a real question, writing rules that survive, and avoiding the classic categorization traps.
Read - July 27, 2026 · 12 min read
Tax preparation workflows for freelancers and small businesses
A year-round tax preparation routine that makes returns easy and audits painless. Records, quarterly estimates, and the exact folder structure to use.
Read - July 26, 2026 · 10 min read
How to convert a bank statement to OFX (2026)
Turn PDF or CSV bank statements into a clean OFX file Sage, Quicken, and other accounting apps accept on the first upload.
Read - July 25, 2026 · 8 min read
Bank statement vs bank certificate: differences
Bank statements list transactions; bank certificates confirm account facts. Which one you need for visas, loans, and audits, and how each is used.
Read - July 10, 2026 · 14 min read
How to detect a fake bank statement: a practical verification guide
Can fake bank statements be verified? Yes. The technical markers landlords, lenders, and accountants use to spot altered or fabricated PDF statements.
Read - July 10, 2026 · 12 min read
Bank statement abbreviations and transaction codes: a plain-English guide
What CO, OD, POS, ACH, DDA, and the other codes on your statement actually mean, plus the ones that matter for lenders and accountants.
Read - July 9, 2026 · 11 min read
AI vs rule-based bank statement analysis: privacy, accuracy, determinism
Can ChatGPT analyze your bank statement? Yes, but there are real trade-offs. Here's how AI and rule-based analyzers compare on accuracy, privacy, and repeatability.
Read - July 4, 2026 · 9 min read
What is a bank statement analyzer? A plain-English guide
A bank statement analyzer reads your statement, categorizes every transaction, and answers the questions your bank app never does. Here's how it works.
Read - July 4, 2026 · 10 min read
Best free bank statement analyzers in 2026
A grounded comparison of the free bank statement analyzers worth trying in 2026: what each does well, where each falls short, and how to choose.
Read - July 27, 2026 · 11 min read
How to convert a bank statement to Xero CSV (2026)
Turn PDF or CSV bank statements into the exact CSV layout Xero's bank reconciliation tool expects, with the column rules and categorization step most converters skip.
Read - July 1, 2026 · 11 min read
How to convert a bank statement to QBO for QuickBooks (2026)
Turn PDF or CSV bank statements into a clean QBO file QuickBooks accepts on the first try, with the field rules and the categorization step most converters skip.
Read - June 15, 2026 · 8 min read
Convert a PDF bank statement to Excel (2026)
Every reliable way to turn a PDF bank statement into a clean Excel or CSV file, with the trade-offs of each approach and when to skip conversion entirely.
Read - May 22, 2026 · 10 min read
How to analyze a bank statement: a step-by-step guide
Five things worth looking at in any bank statement: cash flow, recurring subscriptions, merchant concentration, category drift, and anomalies.
Read - April 10, 2026 · 9 min read
How to categorize bank transactions without doing it every month
Manual categorization doesn't scale. Here's the rule-based approach that stays accurate as your spending changes, plus a starter category list.
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