Hello,
The quarterly payments start on 4/15 of every year the next quarterly payments are due: 6/15, 9/15 and 1/15. If you haven't made your payments on those quarterly dates the IRS can charge you a penalty. Best practice is to make the payments that are over due as soon as you are able. I'm adding a link for you to bookmark and for more information. https://turbotax.intuit.com/tax-tips/irs-tax-forms/what-is-irs-form-1040-es-estimated-tax-for-indivi....
