Family annual income certificates are usually issued by local neighborhood committees, community service centers, tax bureaus, human resources and social security bureaus and other units. You can follow these steps:

1. Prepare relevant materials: ID card, household registration book, payroll or work unit tax payment certificate, real estate license, etc.

2. Go to local neighborhood committees, community service centers, tax bureaus, human resources and social security bureaus and other units to consult the process and required materials for issuing family annual income certificates.

3. Submit relevant materials and fill in relevant application forms as required.

4. According to the specific circumstances, it may be necessary to pay relevant fees.

5. Receive the family annual income certificate within the specified time.

It should be noted that the process and required materials for issuing family annual income certificates may vary from region to region, subject to the requirements of relevant local departments.

I hope my answer is helpful to you!