Can you staple checks? Depends
We now know that stapling money is a no go as it defaces the US currency, but can you staple a check? Well, that depends on what you are using the check for. If you are mailing in a check with a document, some states won't accept paperclips and stapling the document and check together is an acceptable option. However, both staples and paperclips can slow the processing of your documents. If you need to send a check as part of a donation, payment, or non-IRS documents, confirm with the recipient if can be stapled. But paperclips or enclosing the check and documents within envelopes is usually best way to go!