Why can't I add an attachment to a deposit even though it is smaller than 20 MB?

That usually happens when the file name or type triggers a block rather than the size itself. QuickBooks allows up to 20 MB per file, but it can reject uploads with special characters (like #, &, %, or long names) or unsupported formats. Try renaming the file to something simple, Deposit-Aug.pdf, and upload again.

If you’re working in the browser version, clear cache/cookies or switch browsers, Chrome and Safari tend to behave differently with file uploads. If you’re on the desktop app, close and reopen QuickBooks before trying again; it refreshes the temp upload folder.

Hello there, djuras.

When adding an attachment, did you encounter any specific error message? Please provide any additional details or screenshots to help us provide a tailored answer.

To resolve this issue, start by signing out of your QuickBooks Online account and signing back in. If the issue persists, process this in an incognito or private browsing window, and add the attachment to your deposit again.

Also, make sure you’re using a supported browser, such as Google Chrome, Microsoft Edge, or Safari, when accessing QuickBooks Online.

If you have any further questions or need assistance with QuickBooks, feel free to click the Reply button.