YMYL (Your Money or Your Life): definition and why it matters

YMYL stands for "Your Money or Your Life". Google uses it for pages and queries where poor information could seriously affect a person's health, financial stability, safety, or wellbeing.

Typical YMYL topics include:

• Health: symptoms, medication, treatment, mental health.
• Money: loans, investing, taxes, insurance, payments.
• Safety: emergency guidance, product safety, hazardous activities.
• Civic and legal: legal rights, voting, official processes.

The term comes from Google's Search Quality Rater Guidelines, the document human raters use to evaluate results. Raters do not rank pages. Their ratings help Google check whether its systems work.

Google's helpful content guidance says E-E-A-T (experience, expertise, authoritativeness, trust) "isn't a specific ranking factor". Google's systems approximate it through other signals, and give those signals more weight on YMYL topics.

Two things follow:

• There is nothing to switch on. No tag, markup or setting declares a page YMYL or proves it trustworthy.
• The bar rises with the stakes. A thin page on a medical or financial question faces more competition from sources Google already treats as reliable for that topic. Read more on how that per-topic idea works in topic authority.

Google documents this for Search. The other AI engines don't publish an equivalent category in the documentation in our evidence base. For what is and isn't known there, see whether AI search is stricter about health and finance content.

AI platforms get specific facts wrong about specific brands. On a YMYL topic, the wrong fact is the one a reader acts on.

Say you run a hypothetical lending app. An AI answer that misstates your headcount is a minor error. An answer that quotes last year's interest rate, or says you serve a state you don't, can send a customer into a bad decision and a complaint. That is why one serious AI error matters more than many small ones.

Two mechanisms make these errors likely:

• Stale model knowledge. When an engine answers without searching, it uses what it learned before its knowledge cutoff. OpenAI's model docs list a Feb 16, 2026 cutoff for the GPT-5.6 family and Aug 31, 2025 for ChatGPT's Instant path. A fee changed since then is invisible to that answer.
• Unreadable pages. Vercel's crawler study found ChatGPT and Claude crawlers fetch JavaScript but don't execute it. If your rates load client-side, those crawlers never see them.

The next move: state each critical fact (price, rate, eligibility, dosage limit) as plain text in the server-rendered HTML. Check that robots.txt lets retrieval bots such as OAI-SearchBot in, and that your CDN doesn't return 403 to them. Regulated teams will find more in AI visibility for fintech companies. The free checker on this site shows what AI engines say about you for up to three buyer questions, which is a quick way to spot a wrong YMYL fact.

• "Improve your YMYL or E-E-A-T score." No such score exists. Google says E-E-A-T is not a specific ranking factor, so no tool can measure one.
• "An expert author box protects YMYL content." Otterly's 2026 experiment gave one AI-generated site a fictional wildlife biologist author. Google removed it from its index after about 14 days, while the site with no author lasted about 90. One pair of sites proves little, but it is no evidence that author boxes help.
• "Domain authority decides YMYL trust." Domain Authority is a third-party metric no engine computes. See domain authority and AI search.
• "YMYL only matters for health sites." Any brand that publishes prices, financial terms or safety guidance has YMYL pages.

• Topic authority: how reliability is judged per topic, not per site.
• Knowledge cutoff: why an unsearched AI answer can carry outdated facts.
• E-E-A-T: Google's quality concept, weighted most on YMYL topics.

What topics count as YMYL? Topics where inaccurate information could harm someone's health, finances, safety or wellbeing. That covers medical and mental health content, banking, lending, investing, insurance and tax, legal rights and official processes, and safety guidance. A page doesn't need to be on a health or finance site to qualify. A pricing page for a financial product or a dosage note on a supplement store is YMYL content.

Is YMYL a Google ranking factor? Not as a switch or a score. Google says E-E-A-T isn't a specific ranking factor, and that its systems approximate it through other signals, weighted more heavily on YMYL topics. In practice, YMYL describes how high the bar is, not a box you tick. No markup or setting marks a page as YMYL or proves it trustworthy.

Do ChatGPT, Perplexity and Claude use YMYL? They don't publish a YMYL category in the documentation in our evidence base, so nobody outside those companies can say how they weight these topics. What is documented is access: OpenAI's OAI-SearchBot controls ChatGPT search eligibility, and most AI crawlers don't run JavaScript. Getting your exact YMYL facts fetchable is the part you control.

How do I check what AI says about my YMYL facts? Ask each engine the questions a buyer would ask, then compare every specific fact in the answer (price, rate, eligibility, coverage area) against your own pages. Check answers with and without web search where you can, because unsearched answers reflect the model's older training data. Fix contradictions on your own site first, since engines can only quote what they can read.