Don’t incorporate a tagline in the logo. A tagline is a great addition to any logo, and may work hand in hand with your logo in the branding process, but if it is intertwined, or layered in your logo, it makes it difficult to use one independent of the other. This creates a problem in reproduction as well, when the logo is printed on a very small scale. Be sure to design these as two separate pieces and then use them together when it is fitting. A tagline may be used without the company logo, as well as vice versa. You will be glad you have the versatility in doing this.
Nike. The Nike logo is also one of many great examples of this. Sometimes, you see only the Nike “swoosh”. Other times, the swoosh+”Nike” and there are times you see the tagline, accompanying the swoosh. “Just Do It.” This is a perfect example of the versatility that a company has when designing a tagline independent of the actual logo.