Worth paying for a certificate? after 4 years as a payroll clerk

I am considering a short certificate to improve my chances as a payroll clerk. It has been a long 6 weeks. I am unsure whether employers value it. Is there free funding?

Check a dozen job postings first. If most ask for the same certificate, it is probably worth it.

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.