A company's brand credibility is an important measure that should determine the value of the company, replacing goodwill and other similar brand equity measures that are too nebulous to measure. ‘Brand credibility’ is more specific because ‘credible’ means ‘expertise’ and ‘trust’ — traits that can be measured. More importantly, being credible is also the key to persuasion in supporting important company messages, while ‘goodwill’ is only a part of the persuasion process. The premise for brand credibility measurement is based on how we persuade in all communication, whether interpersonal, company to person or company to company. The premise for brand credibility is based on the familiar communication persuasion model of credible source>message>channel>receiver. The source must be credible if the purpose is to persuade. The more credible the source, the more likely the persuasion-based message will be accepted. This paper explores credibility principles in communication persuasion, introduces credibility-based logo design, reviews the extension of credible logos to all branding elements to achieve brand credibility, compares branding measures, reviews what ‘the totally credible company’ means, and summarises findings, leading to the premise that brand credibility is a viable management strategy and a better measure of brand equity. The author also compares credibility-based logos with non-credible logos. The findings support the hypothesis that credibility-based logos induce higher conversion rates, which are important in supporting company messages, leading to product and service purchases. The company logo credibility traits can be extended to the creativity of all branding elements. Consistency in credibility-based branding is also important in order to achieve an image of brand credibility. This is Integrated Brand Credibility Promotion. Therefore, how much credibility a company has achieved with consistent Integrated Brand Credibility Promotion is the proposed measure of brand equity. The implications involve developing a credibility based brand strategy. Companies must establish company defined credibility traits, both verbal and visual, and should commission designers to develop company logos and other visual and/or verbal and credibility based branding elements. Then, the basic brand management premise of consistency as Integrated Brand Credibility Promotion should be applied to all branding elements as a unified communication expression of the company's desired credibility traits in order to achieve a clear recognition of the company's unique brand image or brand credibility. The first part of this paper was published in Journal of Brand Strategy Volume 4 Number 2.