Mercury's marketing headline "Powerful banking. Simplified finances." is a fairly straightforward and simple H1… but that's why it works.

The pairing of "Powerful" with "Simplified" creates an interesting contrast that addresses both sides of financial services. It successfully combines both robust capabilities that are needed for modern banking with the ease of use needed for the consumer.

This combination suggests that Mercury doesn't sacrifice functionality for simplicity.

Using two short phrases creates a structure that's easy to remember. The matching format of "[adjective] [noun]" for both statements gives the headline symmetry and balance.

Overall, this headline effectively communicates Mercury's value proposition by promising both capability and simplicity.