Manual method
- List current and closed accounts, currencies and needed years.
- In each bank’s official app/site open its statements/documents area and download original PDFs.
- Where offered export transactions as CSV/OFX/QIF in non-overlapping date intervals; save the currency and timezone conventions.
- Compare the first/last date, statement balance and number of files; request older missing documents through that bank’s secure support.
Coverage and limitations: There is no universal banking export. An open-banking connection may expose less history than statements. The linked preservation reference supports archival practice, not any particular bank’s menu or retention policy.
Size and time to allow
Illustrative planning size: 0.1 GB; scenario range 0.01–2 GB. This is a storage-planning example, not a measured average. Your archive may be smaller or larger. Ten years of monthly PDF statements plus CSV transactions for several accounts.
Preparation and hands-on time: Allow 30–90 minutes across a few accounts; older-document requests can take days or longer. Confirm actual deadlines with the bank.
For the 0.1 GB example, network transfer alone is approximately:
| Connection download speed | Transfer estimate |
|---|---|
| 10 Mbit/s | 2 min |
| 50 Mbit/s | 23 sec |
| 100 Mbit/s | 12 sec |
These calculations use decimal GB and 70% of the advertised speed. Tiny transfers can take longer because of startup overhead. Local exports do not need an internet download; use these numbers only for a network transfer. Preparation, retries, extraction, checking and a cloud upload are additional; use upload speed for the latter.
Where and how to keep it
An encrypted USB key can hold this example, but keep another independent copy on an external drive or in private encrypted cloud storage. A USB key alone is easily lost and is not a complete preservation plan. These files expose sensitive identity or financial details; avoid shared folders and retain an independent recovery method.
Create a dated bank_records/YYYY-MM-DD/ folder. Keep received originals unchanged, use a separate working copy, and note the account/profile, selected dates, formats and known gaps in a private README. Compare file sizes, check any supplied checksums, and open sample files from the backup before considering the task finished. Repeat after meaningful additions. Follow the storage, archive-checking and large-file guide.
Sources and review
Public documentation was reviewed on 27 October 2026. No signed-in export or restoration was performed. Account options and availability can change; follow the current provider instructions.