Some households will have a zero or even negative tax burden, but most will have a tax obligation for the year. This is usually paid at least in part through paycheck withholding or estimated tax payments.
This is also the case for us since we pay Self-Employment tax on blog income. (But… plans are in motion to reduce/eliminate this.)
And I don’t know about you, but if I have to pay some taxes…. I at least better get a ridiculously cheap☆ trip to Hawaii out of the deal.