The Tax Reform Act 2017 did away with claiming an exemption for every dependent on your tax return (i.e., you could exempt so much per person that you supported). However, it sounds like you should qualify to file as Head of Household: https://ttlc.intuit.com/replies/3288637.
Enter your information, and the program will determine your best filing status.
The 2018 standard deduction is nearly double the 2017
amount:
$12,000 for Single
Add $1,600 if 65 or older
Add $1,600 if blind
$18,000 for Head of
Household
Add $1,600 if 65 or older
Add $1,600 if blind
$24,000 for Married
Filing Jointly or Surviving Spouses
Add $1,300 for each spouse 65 or older
Add $1,300 for each blind spouse
$12,000 for Married
Filing Separately
Add $1,300 if 65 or older
Add $1,300 if blind
In 2017, the standard deductions were:
$6,350 for Single
Add $1,550 if 65 or older
Add $1,550 if blind
$9,350 for Head of Household
Add $1,550 if 65 or older
Add $1,550 if blind
$12,700 for Married Filing Jointly or Qualified Widow(er)
with Dependent Child
Add $1,250 for each spouse 65 or older
Add $1,250 for each blind spouse
$6,350 for Married Filing Separately
Add $1,250 if 65 or older
Add $1,250 if blind
