Guide

How to Black Out Account Number on a PDF Bank Statement

Before you share your bank statement with a landlord, employer, or lender, your account number should come out. Here's how to do it properly — so the number is actually gone, not just covered.

April 9, 2026 · 4 min read

Quick answer

Use a true redaction tool — not a black shape drawn on top. The fastest option is an AI redaction tool that automatically finds and removes account numbers on every page. If you prefer manual methods, use Adobe Acrobat Pro's Redact tool or the print-marker-scan method. Never use Word, Google Docs, or image editors — they leave the number recoverable.

Why blacking out isn't enough on its own

A PDF is not an image — it's a structured document with a text layer underneath the visual presentation. When you draw a black rectangle over your account number in most editing tools, the number is still there in the file's data. Anyone can select the "blacked out" area, copy it, and paste the account number into a text editor.

True redaction — as offered by Adobe Acrobat Pro and proper redaction tools — removes the text data from the file entirely, not just covers it visually. The methods below achieve this. The ones to avoid do not.

Where account numbers appear on a bank statement

Before you start, know where to look. Missing one instance defeats the purpose.

Page header

Most banks print the full account number at the top of every page — check all pages, not just the first.

Account summary section

Usually near the top of page 1, alongside your name and statement period.

Page footer

Some banks repeat the account number in small print at the bottom of each page.

Individual transaction rows

Less common, but some banks include the last 4 digits on certain transaction lines.

Direct debit mandates

If your statement includes a direct debit section, full account and sort code details may appear there.

4 methods to permanently black out your account number

All four methods below produce a file where the account number is genuinely gone — not just hidden.

1. AI redaction tool (fastest)Recommended

Go to mybankstatementanalysis.com/redact-bank-statement.
Upload your PDF bank statement.
The AI automatically identifies and removes account numbers, sort codes, IBANs, and routing numbers.
Download the redacted PDF — account numbers are replaced with solid black bars.
Your file is never stored — it's processed in memory and discarded immediately.

Note: This method scans every page, including headers and footers, and removes all instances automatically. No risk of missing one.

2. Adobe Acrobat Pro (permanent, reliable)Paid

Open your PDF in Adobe Acrobat Pro.
Go to Tools → Redact (you may need to search for it in the tools panel).
Click 'Mark for Redaction' and select the account number on each page.
Use Find & Replace Redaction to search for the account number pattern across all pages at once.
Click 'Apply Redactions' — this permanently deletes the data from the file.
Save the file. The account number is now gone from the PDF's data layer.

Note: The 'Find & Replace' approach is useful if the same number appears on 12 pages — mark them all in one step.

3. Print → marker → scan methodFree, no software

Print your bank statement.
Use a thick black permanent marker (Sharpie chisel tip works best). Apply two overlapping layers.
Hold the page up to a bright light — the text beneath must not be visible through the ink.
Scan the page (or photograph it clearly) and save as PDF or JPG.
Submit the scanned copy, not the original. The scan flattens the image so no text layer remains.

Note: This is the most secure method for paper statements — the scanned output is a pure image with no recoverable text.

4. Mac Preview — flatten to imageFree, Mac only

Open the PDF in Preview.
Open Markup Toolbar (View → Show Markup Toolbar).
Select the Rectangle tool, set fill to solid black, no border.
Draw rectangles over every instance of the account number.
Export as PNG: File → Export → Format: PNG.
Re-save as PDF: open the PNG → File → Print → Save as PDF.
The resulting PDF is image-only — the account number data is gone.

Note: Skip the PNG conversion and you'll have a PDF where the text is still selectable under the black box. The PNG step is essential.

What not to use

Google Docs / Microsoft Word

Drawing a black shape over text does not remove it. The text layer remains fully accessible.

Canva or similar design tools

Same problem — visual overlay only. The PDF export still contains the original text beneath.

Screenshot and re-save

If the screenshot captures the uncovered version (before you draw anything), the account number is visible in the image.

Highlighting in black in any editor

Highlight color is cosmetic. Copy the highlighted text and it pastes as plain text.

Frequently asked questions

Is it safe to black out only the account number and keep the rest?

Yes — for most situations. Landlords, employers, and lenders usually need to see your name, bank name, statement period, balances, and transaction history. Removing the full account number (but keeping the last 4 digits if shown separately) is standard practice and widely accepted.

Can a landlord still verify my statement with the account number blacked out?

Yes. Landlords are verifying income, balance levels, and cash flow — not trying to access your account. A statement with a redacted account number is accepted by the vast majority of letting agents and private landlords. If a landlord insists on the full number, offer an alternative like a bank reference letter.

Will Google Docs or Word blacking out actually remove the account number?

No. Placing a black shape or color block over text in Google Docs, Word, or Canva does not remove the underlying text. Anyone can delete the shape and read the number, or select all text and copy it. Use a proper redaction tool or the print-and-scan method.

Does my account number appear on every page of the bank statement?

Usually yes. Most banks print the account number in the header or footer of every page. Always check all pages before submitting — redacting only page 1 is a common mistake.

What about the sort code or routing number — should I redact that too?

Yes, if you're sharing with a third party who doesn't need to make payments to you. The account number alone is low-risk, but combined with a sort code or routing number it enables ACH transfers or direct debits. Redact both together as a precaution.

Is there a difference between blacking out and redacting?

In practice, 'blacking out' usually means visually covering text (which may still be recoverable). True 'redaction' permanently removes the underlying data. For bank statements, always use true redaction — not just a visual overlay.

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