To get a tax-exempt certificate, you need to follow the steps outlined by the organization or state that issues the certificate. The steps may vary depending on the organization or state. Here are some general steps that may help you get started:

1. Determine if your organization is eligible for tax-exempt status.
2. Obtain an Employer Identification Number (EIN) from the IRS.
3. Gather your organization documents.
4. Determine your state’s registration requirements.
5. Fill out and submit the appropriate forms to apply for tax-exempt status.
6. Wait for approval.

Here are some resources that can help you get started:

- [IRS website](https://www.irs.gov/charities-non-profits/applying-for-tax-exempt-status) provides detailed information on how to apply for tax-exempt status.
- [The Home Depot Pro website](https://www.homedepot.com/c/tax_exempt_status) provides a step-by-step guide on how to register for a Tax Exempt ID.
- [UpCounsel website](https://www.upcounsel.com/how-to-get-a-tax-exempt-certificate) provides information on how to apply for tax-exempt status.