If you take Lyft for work trips, there's a decent chance you've been leaving free ride credit on the table. Lyft Business Rewards is a little-known perk that lets employees earn personal Lyft Cash on rides their company pays for, and you can sign yourself up in about two minutes without asking a manager or filing a single IT ticket.

The system runs off something called a Business Profile, a free feature inside the Lyft app that separates work rides from personal ones. If your employer has a Lyft Business account — common at medium and large companies — you link your work email, flip to the Business Profile when booking a work ride, and Lyft keeps the expenses and receipts organised for you. Not sure if your company qualifies? You only need a work email address to check your eligibility through the enrollment link.

Once enrolled, the earning is automatic. Eligible riders get 6% back in Lyft Cash on standard business rides and 8% on premium rides, airport trips and scheduled pickups. There are no points to track or transfer partners to juggle — the cash just lands in your account.

The numbers are more meaningful than they first look. Take a regular road warrior doing four airport rides a month at roughly $45 each plus eight standard rides at around $20 for client meetings. That's $340 in monthly work spend, which generates about $24 a month in Lyft Cash — close to $290 over a year, essentially for rides you were taking anyway.

Crucially, the rewards belong to you, not your employer. The Lyft Cash posts automatically and can be spent on personal rides: getting home from dinner, weekend trips, whatever you like. There's no minimum balance and no usage limit. One catch worth knowing: your Lyft Cash expires 60 days after you earn it, so use it regularly rather than stockpiling it.

There's also a double-dip play here. If you've linked airline or hotel loyalty programs to your Lyft account, you still earn accelerated partner points or miles on eligible business rides on top of your Lyft Cash. Lyft has recently refreshed and expanded these partnerships, so it's worth opening the rewards settings in the app to see what's on offer, even if you checked a while ago.

For anyone whose employer books them into Lyft for airport runs and client visits, this is a rare genuinely free win: two minutes of setup, no cost, no downside, and real money back on spend you can't control. The only effort required is remembering to switch on your Business Profile before each work ride — and using up the credit before it lapses.