United's co-branded business credit card has quietly become one of the more sensible picks for small-business owners who fly the airline regularly. At $150 a year, it's not cheap like a no-fee card, but the perks stack up quickly — starting with a welcome offer of 90,000 MileagePlus miles plus 2,000 Premier Qualifying Points after spending $5,000 in the first three months. Add an authorised user within that window and there's another 10,000 miles. At a rough valuation of 1.3 cents per mile, the bonus alone is worth around $1,300 before you count the status credits.

The reason a card like this matters more than it used to comes down to how United now runs MileagePlus. Cardholders earn an extra 3x miles per dollar on United purchases regardless of elite tier, and — more importantly — award pricing and access to Polaris business class seats increasingly favour people holding a co-branded card. If you redeem United miles with any regularity, the maths has shifted to make one of these cards close to essential.

On an ongoing basis, the card earns 2x miles on United purchases, gas stations, dining, office supply stores and local transit, and 1x everywhere else. Spending also earns PQPs toward status at a rate of one per $20, capped at 4,000 a year — helpful, but not enough on its own to reach anything beyond the lower elite tiers, which start at 6,000 PQPs.

The perks are where the fee gets covered. The primary cardholder and a companion get a free first checked bag on United flights, worth up to $100 each per round trip given the airline's $45-50 bag fees. There are also two United Club passes annually (worth $118 at the walk-up price), Group 2 boarding, 25% back on inflight food, drinks and Wi-Fi, and a $125 TravelBank credit for making five United purchases of $100 or more in a calendar year. Employee cards are free, with individual spending limits, and there are no foreign transaction fees — useful for overseas spending, where dining purchases still earn bonus miles.

The softer benefits are more hit and miss. A $10 monthly Instacart credit is easy value if you already use the service and easy to forget otherwise. Two Economy Plus upgrades unlock only after $25,000 of annual spend, which is a steep hurdle for most small businesses. And there's no proper lounge membership — the two annual passes are a taster, not a substitute. One nice touch: holding the business card alongside a personal United card earns a 5,000-mile anniversary bonus each year.

The main restriction to know: you won't get the welcome bonus if you've had one on this card in the past 24 months, and Chase's 5/24 rule applies — five or more new personal cards opened in two years usually means a denial. Good to excellent credit is effectively a prerequisite.

Who's it for? United loyalists running a small business who want the practical flying perks — bags, boarding, occasional lounge access — without paying the $300-plus premium that bigger cards command. If you check bags twice a year and buy a couple of Club passes, the card has already paid for itself. For everyone else, a general travel rewards card probably earns more.