I bought a home in august of 2016. I didn't write it off on my taxes when filled, therefore my question to you is can i write it off this year since i didn't get credit?

[VolvoGirl]

Write what off?  You can deduct mortgage interest and property taxes if you itemize deductions.  You can only deduct them the year you paid them.  Do you want to go back and amend 2016 to add them?
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There is no first time homebuyer credit anymore unless your state had something.

[xmasbaby0]

There is not a first time home buyers credit on a Federal return. That ended in 2010. If your state has such as credit, you will be able to enter it when you prepare your state return.

Buying a home is not a guarantee of a big refund.  Your deductions for homeownership combined with your other deductions (if any) must exceed your standard deduction to change your tax due or refund. If you purchased your home late in the year, you do not even have a full year of home ownership deductions.

 Go to Federal> Deductions and Credits> Your Home to enter mortgage interest, property taxes, private mortgage insurance and loan origination fees (“points”) that you paid in 2016.  You should have a 1098 from your mortgage lender that shows this information.

Your closing costs on your new home are not deductible except for prepaid interest, prepaid property tax or loan origination fees.  There are no deductions for appraisal, inspections, title searches, settlement fees. etc.

Your down payment is not deductible.

Your homeowners insurance for fire, hazard, flood, etc. is not deductible for your own home.

Home improvements, repairs, maintenance, etc. for your own home are not deductible.  

Homeowners Association  (HOA) fees for your own home are not deductible.