https://www.ftb.ca.gov/forms/2021/2021-540-booklet.html Your Filing Status | Enter On Line 18 -- | -- 1 – Single | $4,803 2 – Married/RDP filing jointly | $9,606 3 – Married/RDP filing separately | $4,803 4 – Head of household | $9,606 5 – Qualifying widow(er) | $9,606 https://casetext.com/statute/california-codes/california-revenue-and-taxation-code/division-2-other-taxes/part-10-personal-income-tax/chapter-3-computation-of-taxable-income/article-1-definition-of-gross-income-adjusted-gross-income-taxable-income-etc/section-170735-standard-deduction?searchWithin=true&listingIndexId=california-codes.california-revenue-and-taxation-code.division-2-other-taxes.part-10-personal-income-tax.chapter-3-computation-of-taxable-income&q=standard%20deduction&type=statute&sort=relevance&p=1
https://www.ftb.ca.gov/forms/2021/2021-540-booklet.html
https://casetext.com/statute/california-codes/california-revenue-and-taxation-code/division-2-other-taxes/part-10-personal-income-tax/chapter-3-computation-of-taxable-income/article-1-definition-of-gross-income-adjusted-gross-income-taxable-income-etc/section-170735-standard-deduction?searchWithin=true&listingIndexId=california-codes.california-revenue-and-taxation-code.division-2-other-taxes.part-10-personal-income-tax.chapter-3-computation-of-taxable-income&q=standard%20deduction&type=statute&sort=relevance&p=1