What Is Domain Authority and Does It Matter for Small Businesses?

Domain Authority (DA) is one of the most discussed — and most misunderstood — metrics in the SEO world. Small business owners sometimes obsess over their DA score, while others have never heard of it. Here’s what it actually means, how it’s calculated, and whether you should care about it.

What Is Domain Authority?

Domain Authority is a score developed by Moz (a marketing software company) that predicts how likely a website is to rank in search engine results pages. The score ranges from 1 to 100, with higher scores indicating greater ranking potential.

Important clarification: Domain Authority is a Moz metric, not a Google metric. Google does not use DA as a ranking signal. However, DA correlates strongly with factors that Google does use — primarily the quality and quantity of backlinks pointing to your site — which is why it’s widely used as a proxy for overall SEO authority.

How Is DA Calculated?

Moz’s DA algorithm considers dozens of factors, with the most significant being:

• The number of unique domains linking to your site (linking root domains)
• The authority of those linking domains
• The total number of backlinks
• The quality and relevance of your link profile

A new website starts at DA 1. As you build quality backlinks and your site matures, DA increases. Industry giants and major publications often score 80–95. A score of 30–50 is solid for a small business website, and 50+ is excellent.

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Does DA Actually Matter for Small Businesses?

Sort of — but not in the way most people think. Here’s the nuanced answer:

DA matters as a competitive analysis tool. When you search a keyword and analyze the first-page results, checking the DA of competing websites helps you assess whether you can realistically rank. If all first-page competitors have DA 60+, a new website at DA 10 will struggle significantly.

DA also matters for evaluating link opportunities. When seeking backlinks through guest posting or partnerships, prioritize sites with higher DA — those links carry more weight.

DA does not need to be a primary KPI for most small businesses. Obsessing over your DA score can distract you from what actually builds it: consistently creating quality content, earning legitimate backlinks, and maintaining a technically sound website.

How to Improve Your Domain Authority

Since DA is primarily driven by backlinks, improving it requires the same link-building strategies covered in the previous article: creating linkable content, guest posting, building local citations, and earning press mentions.

Additionally:

• Fix broken links on your site (broken links waste link equity)
• Disavow toxic backlinks (spammy links pointing to your site can hurt your profile)
• Increase your content publishing frequency (more content creates more link targets)
• Improve site speed and technical SEO (Google’s signals correlate with DA factors)

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Checking Your DA

Check your current DA for free using Moz’s Link Explorer or the MozBar Chrome extension. You can also check competitor websites to benchmark where you stand in your market. Use this data to set realistic SEO expectations and prioritize your link-building efforts accordingly.

The Bigger Picture

Domain Authority is a useful signal, not a definitive verdict. Small businesses with modest DA scores can — and do — outrank high-DA competitors for specific keywords through superior content relevance, local optimization, and targeted link building. Focus on the fundamentals, and DA will follow naturally. For more SEO metric guides, competitive analysis frameworks, and authority-building strategies for small business websites, Internet Chicks Worth offers practical SEO education for business owners who want to understand what actually moves the needle.