I donate $5 at Publix. Publix's income (and tax responsibility) increases by $5. They donate my (and everybody else's) $5. Their income (and tax responsibility)

I donate $5 at Publix. Publix's income (and tax responsibility) increases by $5. They donate my (and everybody else's) $5. Their income (and tax responsibility) decreases by $5 to the original level.