Offering an existing client a higher tier or larger version of what they're already buying, increasing the value of the sale.
An upsell moves a client up, not sideways. They came for the basic logo; you offer the full brand package. They booked a single session; you offer the ten-session bundle at a better per-unit rate. It’s the same category of thing they already want, just more of it — which makes it an easy yes when the value is clear.
For sellers, upselling is the least stressful way to grow revenue, because you’re selling to someone who already trusts you and already said yes. The key is timing and honesty: offer the upgrade when it genuinely serves the client’s goal, not as a reflex. Tiered packages make it natural — the middle and top tiers are upsells sitting in plain sight.
For buyers, a good upsell saves you from coming back later for something you’ll end up needing anyway. A bad one pressures you into scope you don’t want. The test is simple: does the bigger option actually move your goal forward?
Don’t confuse it with a cross-sell, which adds a different service. Both get easier when your offers are structured — learn to package your services so the next tier is obvious.