Do I need to file if my income was less than $25000 ? I'm single,head of household. On social secirity.

Was Social Security your only income?

Hi -- Looks like you won't need to file taxes if your only income is Social Security because 1) Your Social security is not taxable and 2) your taxable income is under  your standard deduction. But you may want to file your return if you qualify for refundable credits. I've included some links below.

Does everyone need to file an income tax return?

https://turbotax.intuit.com/tax-tips/irs-tax-return/does-everyone-need-to-file-an-income-tax-return/...

Is Social Security Taxable?

https://www.investopedia.com/ask/answers/081715/are-social-security-benefits-taxable-after-age-62.as...

Thanks for using TurboTax! 

Yes, you do need to file.

You can run through the IRS' "Do I need to file" tool to confirm.

https://www.irs.gov/help/ita/do-i-need-to-file-a-tax-return