$75,000 capital gain and dividend income exclusion

No, I'm not aware of that rule. Are you referring to your federal income tax or state income tax? If state, what state?

Per IRS: The tax rate on most net capital gain is no higher than 15% for most individuals. Some or all net capital gain may be taxed at 0% if your taxable income is less than or equal to $41,675 for single and married filing separately, $83,350 for married filing jointly. 

You may have some dividends that you don't end up paying federal income tax on. Some people refer to these as tax-free dividends. This can happen if your dividends are qualified and your taxable income falls below a certain threshold or if they are tax-free dividends paid on municipal bonds.

Ordinary dividends are taxed using the ordinary income tax brackets for tax year 2022.

Qualified dividend taxes are usually calculated using the capital gains tax rates. For 2022, qualified dividends may be taxed at 0% if your taxable income falls below:

• $41,676 for those filing single or married filing separately,
• $55,801 for head of household filers, or
• $83,351 for married filing jointly or qualifying widow(er) filing status.

The qualified dividend tax rate increases to 15% for taxable income above

• $41,676 through $258,600 for married filing separately filers,
• $41,676 through $459,750 for single filers,
• $55,801 through $488,500 for head of household filers, or
• $83,351 through $517,200 for married filing jointly or qualifying widow(er) filers.

Qualified dividend income above the upper limits of the 15% bracket requires paying a 20% tax rate on any remaining qualified dividend income. Depending on your specific tax situation, qualified dividends may also be subject to the 3.8% Net Investment Income Tax.