Assuming you have net income from your Schedule C if you have 1099MISC incomeas an independent contractor and if you do not pay your income taxesquarterly you will be subject to penalty and interest charges. Theseestimates must be paid timely no matter what. For example if you miss oneestimate payment date and u201cmake upu201d the difference on the next estimate youstill will be subject to late paying penalty and interest charges. You reallyshould project your net income for the entire year so you can calculate yourtax liability for the entire year to more accurately determine the appropriateamount of estimated tax payments you should pay.