If I lived with my parents but moved to an apartment mid year (6/29/21) can I file head of household or do I need to file single?

Are you supporting a qualified dependent?   Renting an apartment does not make you head of household for tax purposes.

 

Am I Head of Household?

https://ttlc.intuit.com/questions/1894553-do-i-qualify-for-head-of-household

https://ttlc.intuit.com/questions/2900097-what-is-a-qualifying-person-for-head-of-household

 

If you qualify as Head of Household, when you enter your marital status (single or married filing separately) into MyInfo, and then enter your qualifying dependent, TurboTax will offer HOH as your filing status.

Yes I’m unmarried and I have a qualifying defendant who lived with me all year. However at my previous address I didn’t pay rent or over half the upkeep.

You may qualify for the Head of Household filing status.   Perhaps you lived one month at your previous address and eleven months at your current address where you paid all the costs of keeping up a home.

 

If you do not qualify for HOH, you will file as Single.

 

IRS Publication 501 page 8 states:

 

You may be able to file as head of household if you meet all the following requirements.:

• You are unmarried or considered unmarried on the last day of the year.
• You paid more than half the cost of keeping up a home for the year.
• A qualifying person lived with you in the home for more than half the year (except for temporary absences, such as school). However, if the qualifying person is your dependent parent, he or she doesn't have to live with you.

To qualify for head of household status, you must pay more than half of the cost of keeping up a home for the year. You can determine whether you paid more than half of the cost of keeping up a home by using Worksheet 1 on page 8.

 

Costs you include.

 

Include in the cost of keeping up a home expenses such as rent, mortgage interest, real estate taxes, insurance on the home, repairs, utilities, and food eaten in the home.

 

Costs you don't include.

 

Do not include the cost of clothing, education, medical treatment, vacations, life insurance, or transportation. Also don't include the value of your services or those of a member of your household.