"DBA" means Doing Business As and there's no reason why you really need a DBA if you're simply working as an independent contractor. You can certainly operate your business using your own name. Perhaps what you are actually thinking of is Estimated Taxes? Those are the quarterly tax payments you might need to make when you work as an independent contractor and there's no taxes withheld from the income you receive. You MIGHT need to make the 4th quarter's estimated tax payment, due 1/15/18, depending on your circumstances. As soon as you can after 1/1/18 enter ALL the information you need for your 2017 income tax return - you might have to make some estimates but at that point you should be working with fairly accurate numbers - and see if TurboTax tells you that you could be subject to an underpayment penalty. If it does then you can fill out a Form 1040ES by hand
(the forms themselves are in the last few pages of the pdf) and mail it in, with a check. If TurboTax tells you that you're not subject to underpayment penalties then no estimated tax payment is necessary. Tom Young
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