No. Grandma remembers the old days when you got an exemption for claiming a dependent. That ended in 2017. And....a spouse can NEVER be claimed as a dependent. If they are filing a tax return, they should file a joint return.
Married Filing Jointly is usually better, even if one spouse had little or no income. When you file a joint return, you and your spouse will get the married filing jointly standard deduction of $27,700 (+$1500 for each spouse 65 or older)
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**