Only one parent needs to complete the FAFSA, but which parent matters
The Free Application for Federal Student Aid (FAFSA) requires information from only one parent — the one who claims the student as a dependent on their tax return. If both parents file taxes jointly, either parent can fill out the form. If they file separately, the parent whose income is reported on the student's FAFSA is the one who must provide their information.
The parent who completes the FAFSA will need their Social Security number, tax return information, and details about assets and income. The other parent does not need to sign in, create an account, or provide any information to the Department of Education.
This rule applies whether the parents are married, divorced, or separated. The determining factor is which parent the student legally depends on for tax purposes — not custody, not who pays for school, not who the student lives with most of the time.
Key Takeaways
- Only the parent who claims the student as a dependent on their tax return needs to complete the FAFSA.
- If parents file taxes jointly, either one can fill out the form using their own Social Security number and tax information.
- If parents file separately, only the parent whose income is reported on the student's FAFSA must provide information.
- The other parent does not need to create an account, sign anything, or submit any documents to the Department of Education.
- Custody arrangements and who pays for school do not change which parent completes the FAFSA — tax dependency does.
What happens if parents file taxes jointly
When both parents file a joint tax return, either parent can be the one to fill out the FAFSA. You will need one parent's Social Security number to create the account and sign in, but the form itself asks for combined household income and assets from both parents anyway.
It does not matter which parent's name goes on the FAFSA account. The financial information reported will be the same either way. Some families choose to have the parent who is more familiar with the student's school or the financial aid process handle it, while others simply pick whoever has time that day.
What happens if parents file taxes separately
When parents file separate tax returns, the FAFSA must use the income and assets of the parent who claims the student as a dependent. This is the parent whose name appears on the student's Social Security record as the custodial parent for tax purposes.
If you are unsure which parent claims the student, check the most recent tax return or ask the parent who filed it. The IRS Form 1040 lists dependents by name and Social Security number. Once you know which parent that is, that parent will complete the FAFSA using their own tax information.
The other parent's income, assets, and tax information are not reported on the FAFSA in this situation. This can significantly affect the amount of aid the student is considered for, since only one household's finances are counted.
Divorced or separated parents
When parents are divorced or separated, the parent who has legal custody and claims the student as a dependent on their tax return is the one who completes the FAFSA. Custody arrangements — whether the student lives with one parent full-time or splits time between both — do not change this rule. Tax dependency is what matters.
If custody is shared but only one parent claims the student for tax purposes, that parent fills out the FAFSA. If the parents alternate claiming the student year to year, the parent who claims them in the tax year before the student starts college is the one who completes the form.
The other parent should not create an account or attempt to fill out a FAFSA. Doing so can create duplicate records or conflicting information that delays processing.
When a parent is unavailable or unwilling
If the parent who should complete the FAFSA is unavailable, unwilling, or unable to provide information, the student and the other parent should contact the school's financial aid office. The aid office can sometimes work with the student's circumstances and may have options for students whose parents will not cooperate.
In rare situations, a student may be considered independent for financial aid purposes, which means neither parent's information is required. This is not automatic and has strict requirements — the student must meet specific conditions such as being 24 years old, married, a graduate student, a veteran, or having no contact with either parent. The financial aid office determines independence, not the student or parents.
How to know which parent should fill it out
Before starting the FAFSA, find out which parent claims the student as a dependent on their tax return. You can do this by asking the parent directly, looking at a copy of the tax return, or checking IRS records if the student is old enough to request them.
Once you know, that parent should create the account using their own Social Security number and sign in to complete the form. They will need their tax return from the year before the student starts college, their Social Security number, and information about any assets or income sources.
What the other parent needs to do
The parent who does not complete the FAFSA does not need to do anything. They do not need to create an account, sign anything, or provide documents. The Department of Education does not contact them or require their participation.
However, if the parents are married and file jointly, both parents' income and assets are already included in the FAFSA through the one parent who filled it out. If the parents are separated or divorced, only the custodial parent's information is used, and the other parent's finances do not factor into the aid calculation.
Frequently Asked Questions
Can both parents fill out the FAFSA together?
No. Only one parent creates the account and completes the form. If both parents try to fill it out, it creates duplicate records that can delay processing. If you are married and filing jointly, either parent can do it — just pick one.
What if my parents are divorced and I live with my mom, but my dad claims me on his taxes?
Your dad completes the FAFSA, since he is the parent who claims you as a dependent. Where you live does not change this. Your dad will report his income and assets, and your mom's information is not included.
Do I need both parents' Social Security numbers?
No. Only the parent who completes the FAFSA needs to provide their Social Security number. If parents file jointly, both their incomes are reported, but only one Social Security number is used to sign in.
What if my parents refuse to fill out the FAFSA?
Contact your school's financial aid office. They can explain the consequences and sometimes work with your situation. In limited cases, you may be considered independent for financial aid, but this requires meeting specific criteria and is determined by the school, not by your parents' refusal.
Can I fill out the FAFSA without my parents?
No. The FAFSA requires a parent's tax information and Social Security number unless you meet the strict criteria for being considered independent. You cannot complete it alone, even if you are paying for school yourself.