Why an i only getting $318 out of my $735 if i have paid my owed state taxes of $417 prior to getting my taxes. where is my full refund if i already paid?

This year, you may have noticed that your refund is lower than you expected. There are many reasons this could happen, from life changes to tax law changes. The best thing to do is to compare your current tax return with your prior year return to see exactly what's different. 
 

Get a copy of your 1040 from last year and let’s get started.

1. After you Sign in to TurboTax, 
2. Click Pick up where you left off
3. Select Tax Tools from the left menu
4. Then Tools
5. Next select View Tax Summary, 
6. then Preview My 1040 from the left menu

Also, look to see how your Federal Tax withholdings and estimated tax payments changed on lines 25d and 26. 

Lastly, review your total payments and refundable credits on line 33. 

Locating the lines where your tax return has changed, will help you better understand the exact reasons your refund is lower this year.