Quarterly taxes for anyone paid on a 1099. Free, no signup. One question first, because the answer changes everything after it.
Not a trick question, and there's no wrong answer. It decides which of two IRS methods will treat you better.
If your income comes in waves, the IRS lets you pay on what you've actually earned so far instead of a flat quarter of the year. Same total either way — it just stays in your account longer. You can switch answers at any point.