Smart Casual Trends for Men in 2026

Smart casual for men in 2026 is built around soft tailoring rather than suits - think a stand-collar utility jacket over a knit polo, or a linen jacket and trouser set worn without a tie.

What is smart casual clothing?

Smart casual clothing sits between formal tailoring and everyday casual wear. It takes structured pieces, a jacket, tailored trousers, a knitted polo, and combines them without a tie, waistcoat, or full matching suit. The result looks deliberate and put together, but relaxed enough for the office, a dinner, or a daytime event.

The 2026 trends

• Sage green utility jackets - a lightweight stand-collar jacket built for layering over polos and T-shirts, styled as a full utility suit or broken up with jeans and chinos
• Linen jacket and trouser sets - mix-and-match separates, so pieces can be combined with other colourways rather than sticking to one matched set
• Ribbed knit polo shirts - replacing plain pique polos, worn with tailored trousers and loafers for the office or under a utility jacket for a layered look
• Turtleneck jumpers - the fastest way to smarten up an outfit without a shirt and tie, worn under a blazer or alone with tailored trousers
• Pure linen shirts - lightweight and breathable, worn open-collar with chinos or tucked into linen trousers

The strongest colours for 2026 are sage green, navy, camel and stone, and they mix well across categories, a sage jacket over a navy turtleneck, or a camel polo under a stone linen overshirt.

Want the full guide, including a casual vs smart casual comparison table, product picks and an FAQ? Read our complete smart casual trends guide for 2026.