That is a tax due. You owe. Basically your withholding and any credits were not enough to cover the tax on your income. Review each line on your tax return and maybe compare it to last year. If you don't understand an amount post back.
Before filing, You can preview the 1040 or print the whole return
https://ttlc.intuit.com/community/accessing/help/how-do-i-preview-my-turbotax-online-return-before-f...
