How much of my income can I realistically save on a low salary?

On a tight income, the exact percentage matters less than starting and being consistent. If 20 percent is out of reach, save what you can, even 1 to 5 percent, and automate it so it happens before spending. Capture any employer 401(k) match first, since that is an immediate return you cannot beat elsewhere. Focus energy on your two biggest levers, housing and transportation, because trimming a large fixed cost frees far more than skipping small treats. Explore income-based programs and tax credits like the Saver's Credit, which the IRS offers to lower earners who contribute to retirement accounts. As raises come, funnel most of the increase to savings before lifestyle adjusts. Small, automated, growing contributions compound into real security, so do not let a modest starting number stop you.