Convert Multiple Bank Statements in One PDF (Merged & Multi-Month Files)

What counts as a merged statement file?

Three shapes show up constantly in real bookkeeping work:

• Multi-period exports. Online banking lets you export "last 12 months" or a date range, and produces one PDF holding several monthly or quarterly statements back-to-back, each with its own header and opening balance.
• Combined (consolidated) statements. One document covering several accounts — checking plus savings, or a business account family — each with its own summary and transaction table.
• Do-it-yourself merges. Statements downloaded one by one and joined into a single PDF before sending to an accountant or a loan officer.

All three convert the same way: upload the one file, get one result that contains each statement separately.

How does the converter split a merged file?

It reads the document's own signals: a new account number that persists across pages, a fresh opening-balance line, or the statement-period header changing from one page to the next (a real period header repeats on every page of its statement — a stray date range inside a transaction description does not start a new statement).

Each detected statement is then reconciled independently: its own opening balance, plus its transactions, must land exactly on its own closing balance. Periods that chain — one quarter's closing balance becoming the next quarter's opening — come out as a continuous, verifiable sequence. A full financial year of statements is checked to the cent four (or twelve) times over, not once in aggregate.

What does a correct multi-statement result look like?

• One statement per period or account, each with its own opening balance, closing balance, transaction rows and reconciliation verdict — not one long interleaved list.
• Consecutive periods that meet: each period's closing balance should equal the next period's opening balance for the same account. If the bank's export skipped a month, the mismatch makes the gap visible immediately.
• A combined view when you want it: you can review all accounts and periods together as one joint table, and still export per statement or all at once.

That per-period reconciliation is the point of not pre-splitting by hand: every boundary the converter draws is proven by the arithmetic on both sides of it.

Which cases deserve a second look?

• A missing month inside a packet. If the export skipped a period, the chain breaks visibly — the fix is re-exporting the missing month from online banking and converting it too.
• Statements from different banks merged into one file. This works, but check each statement's bank label in the result — and consider converting per-bank files separately if you want per-bank exports anyway.
• Very large packets. A multi-hundred-page, many-hundred-row packet converts fine but takes longer than a single statement — typically around thirty seconds rather than a few.

In every case the honesty rule holds: anything that cannot be verified against the document's own balances is flagged for review, never silently guessed.