Can I deduct the miles driven going around to yard sales on my business taxes, even if I don't find anything to buy for resale that day?

Sure ... that is a cost of doing business ... just keep really good records.

Thank you for your prompt response! It's amazing how hard it was to find this answer on the internet; I would think it should be a very common question/issue.

<a rel="nofollow" target="_blank" href="https://www.irs.gov/taxtopics/tc510">https://www.irs.gov/taxtopics/tc510</a>
<a rel="nofollow" target="_blank" href="https://www.irs.gov/publications/p463">https://www.irs.gov/publications/p463</a>
<a rel="nofollow" target="_blank" href="https://www.irs.gov/forms-pubs/about-form-8829">https://www.irs.gov/forms-pubs/about-form-8829</a>

best you come to a site that can provide current info.  there are a lot of posts on the web that are out of date and some are totally false and have never been correct.