If my only income is Social Security benefits and I am getting a 0 refund, should I file at all for 2022? Also, what is the least expensive method for filing?

[DoninGA]

If the Social Security benefits are the Only income to be reported on the tax return, then there is no reason or need to file a tax return.

[Critter-3]

If the Social Security benefits  is your ( and your spouse’s if married) only income then  there is no need for you to file a  tax return UNLESS one or more of these apply :

• You had federal/state taxes withheld that can be refunded
• You received advance premium tax credit for health insurance from the ACA Marketplace (aka "Obamacare") 
• You took money out of Health Savings Account (HSA) or Medical Savings Account (MSA).
• You are married filing a separate return from your spouse and you lived together during the tax year OR   you are filing a joint return and the spouse has income other than SS benefits.