How do I save for retirement when my income varies a lot?

Variable income makes retirement saving harder but no less essential, and the trick is to use flexible accounts and contribute as cash allows rather than committing to a fixed monthly amount you can't always meet. A Solo 401(k) is ideal here: you can contribute irregularly through the year and finalize the employer portion once you know your profit, even after year-end. A SEP-IRA offers similar flexibility — you decide the amount annually and can fund it up to your tax-filing deadline, extensions included. In strong months, sweep extra into retirement; in lean months, contribute little or nothing without penalty. Set a percentage-of-income target rather than a dollar figure so saving scales with what you earn. Automate a modest baseline contribution and top it up after good quarters. Project where steady saving leads with wealthserene.com/tools/retirement-planner.