The HI Form N-288A relates to HI withholding taken out on the sale of HI real estate and would be considered a credit on your HI state income tax return.
You can report HI withholding under the estimated tax section under the federal taxes tab as withholdings not already entered on a W-2 or 1099.
To enter additional tax payments in TurboTax, log into your tax return (for TurboTax Online sign-in, click Here and click on "Take me to my return") type "estimated tax payments" in the search bar then select "jump to estimated tax payments". TurboTax will guide you in entering this information.
