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  <title>MarginFix insights and glossary</title>
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  <description>Field guides on marketing spend, attribution and margin, and plain English definitions of every audit term, from MarginFix.</description>
  <language>en-us</language>
  <lastBuildDate>Tue, 13 Oct 2026 00:00:00 GMT</lastBuildDate>
  <item>
    <title>How to reconcile GA4 and ad platform revenue with Shopify or Stripe</title>
    <link>https://marginfix.ai/insights/reconcile-ga4-ad-platform-revenue/</link>
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    <pubDate>Tue, 13 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Measurement</category>
    <description>A step by step way to reconcile GA4 and ad platform revenue with your Shopify or Stripe orders, so every reported dollar traces back to a real sale.</description>
  </item>
  <item>
    <title>How to cut wasted ad spend: six checks, in the order to run them</title>
    <link>https://marginfix.ai/insights/how-to-reduce-wasted-ad-spend/</link>
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    <pubDate>Tue, 13 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Paid media</category>
    <description>Six checks to reduce wasted ad spend on Google and Meta, in the order to run them, and how to decide what to cut on contribution margin, not ROAS.</description>
  </item>
  <item>
    <title>Involuntary churn: how failed payments leak subscription revenue, and how to win it back</title>
    <link>https://marginfix.ai/insights/involuntary-churn-failed-payments/</link>
    <guid isPermaLink="true">https://marginfix.ai/insights/involuntary-churn-failed-payments/</guid>
    <pubDate>Tue, 13 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Retention</category>
    <description>How to measure involuntary churn from your billing exports, recover failed payments in the right order, and value each saved subscriber against CAC.</description>
  </item>
  <item>
    <title>The marketing audit process: 8 steps to run one on your own numbers</title>
    <link>https://marginfix.ai/insights/marketing-audit-process/</link>
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    <pubDate>Tue, 13 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Audit method</category>
    <description>How to do a marketing audit in 8 steps: scope the data, make the ledger the source of truth, test what spend caused, size every finding and rank the fixes.</description>
  </item>
  <item>
    <title>How to audit your media agency’s programmatic fees</title>
    <link>https://marginfix.ai/insights/audit-media-agency-programmatic-fees/</link>
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    <pubDate>Tue, 13 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Working with agencies</category>
    <description>How to audit your media agency’s programmatic fees: what each layer of the supply chain takes, which documents to ask for, and how much reaches publishers.</description>
  </item>
  <item>
    <title>Break Even ROAS: Formula and Calculator</title>
    <link>https://marginfix.ai/glossary/break-even-roas/</link>
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    <pubDate>Tue, 13 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Break even ROAS is 1 divided by your contribution margin rate. Find the return your ads need before they add a dollar of profit, with a free calculator.</description>
  </item>
  <item>
    <title>Pricing audit: where discounts eat your margin</title>
    <link>https://marginfix.ai/insights/pricing-audit/</link>
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    <pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Pricing</category>
    <description>A pricing audit checks whether each price, discount and promotion still covers its full cost. Mispriced offers turned up in 47% of our 74 audits.</description>
  </item>
  <item>
    <title>How to measure incrementality with a simple holdout test</title>
    <link>https://marginfix.ai/insights/how-to-measure-incrementality/</link>
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    <pubDate>Mon, 12 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Measurement</category>
    <description>Incrementality is the share of results your marketing caused. How to run a holdout on a small budget, read the result in margin and decide what to cut.</description>
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  <item>
    <title>CAC, Customer Acquisition Cost: Definition</title>
    <link>https://marginfix.ai/glossary/cac/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>CAC, customer acquisition cost, is what it costs to win one new customer. Why the reported figure is usually partial, and how an audit loads it fully.</description>
  </item>
  <item>
    <title>Contribution Margin: Definition and Formula</title>
    <link>https://marginfix.ai/glossary/contribution-margin/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Contribution margin is revenue minus every variable cost of an order. Why it is the number marketing spend has to clear, and how an audit rebuilds it.</description>
  </item>
  <item>
    <title>Incrementality: Definition and How to Test It</title>
    <link>https://marginfix.ai/glossary/incrementality/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Incrementality is the share of conversions that happened because of the spend. How a holdout measures it, why reported ROAS cannot, and the audited cases.</description>
  </item>
  <item>
    <title>Dunning: Definition and Involuntary Churn</title>
    <link>https://marginfix.ai/glossary/dunning/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Dunning is the process of retrying failed recurring payments. How weak dunning turns payment failures into involuntary churn, and how an audit sizes it.</description>
  </item>
  <item>
    <title>Marketplace Take Rate: Definition and Formula</title>
    <link>https://marginfix.ai/glossary/take-rate/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Take rate is the share of each transaction a marketplace keeps. What effective take rate is, and how refunds, waivers and incentives erode it.</description>
  </item>
  <item>
    <title>CAC Payback Period: Definition and Formula</title>
    <link>https://marginfix.ai/glossary/payback-period/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Payback period is how long a customer takes to repay what they cost. Why it belongs on contribution margin, and why it runs longer than the board thinks.</description>
  </item>
  <item>
    <title>LTV:CAC Ratio: Definition, Formula and Example</title>
    <link>https://marginfix.ai/glossary/ltv-cac/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>LTV:CAC compares a customer's lifetime value with what it cost to win them. Why it misleads when LTV is built on revenue, and how an audit rebuilds it.</description>
  </item>
  <item>
    <title>Marketing and Margin Audit: Definition and Scope</title>
    <link>https://marginfix.ai/glossary/marketing-and-margin-audit/</link>
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    <pubDate>Sun, 11 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>A marketing and margin audit is an independent review of marketing spend against unit economics. What it covers, and how it differs from a marketing audit.</description>
  </item>
  <item>
    <title>Blended ROAS: Definition, Formula and Example</title>
    <link>https://marginfix.ai/glossary/blended-roas/</link>
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    <pubDate>Thu, 08 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Blended ROAS is total revenue divided by total ad spend across every channel. What it shows, what it hides, and how an audit rebuilds it from the books.</description>
  </item>
  <item>
    <title>MER, Marketing Efficiency Ratio: Definition</title>
    <link>https://marginfix.ai/glossary/mer/</link>
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    <pubDate>Thu, 08 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>MER, the marketing efficiency ratio, is revenue divided by total marketing spend. How it differs from blended ROAS, and why an audit reconciles it first.</description>
  </item>
  <item>
    <title>Attribution Inflation: Definition and Formula</title>
    <link>https://marginfix.ai/glossary/attribution-inflation/</link>
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    <pubDate>Thu, 08 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Attribution inflation is when your ad platforms claim more revenue than you earned. How it happens, and how an audit measures it against the ledger.</description>
  </item>
  <item>
    <title>Margin Leak: Definition and the Five Patterns</title>
    <link>https://marginfix.ai/glossary/margin-leak/</link>
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    <pubDate>Thu, 08 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>A margin leak is a recurring, usually invisible loss of marketing margin. What counts as one, how big a typical one is in 74 audits, and the five patterns.</description>
  </item>
  <item>
    <title>Wasted Ad Spend: Definition and Measurement</title>
    <link>https://marginfix.ai/glossary/wasted-ad-spend/</link>
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    <pubDate>Thu, 08 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Wasted ad spend is media budget that produces no incremental margin. Its two forms, its share of SMB spend across 74 audits, and how an audit measures it.</description>
  </item>
  <item>
    <title>Non Incremental Spend: Definition, Formula, Test</title>
    <link>https://marginfix.ai/glossary/non-incremental-spend/</link>
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    <pubDate>Thu, 08 Oct 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Glossary</category>
    <description>Non incremental spend is ad budget that buys conversions you would have won anyway. The most common leak in 74 audits, and how a holdout measures it.</description>
  </item>
  <item>
    <title>Where SMB marketing budgets leak, and why nobody sees it</title>
    <link>https://marginfix.ai/insights/where-smb-marketing-budgets-leak/</link>
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    <pubDate>Tue, 21 Jul 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Benchmark report</category>
    <description>Across the 74 audits we have completed, each published as a case study, the leaks cluster into five categories, ranked here by what each one cost a year.</description>
  </item>
  <item>
    <title>Your ROAS is lying to you: an attribution field guide</title>
    <link>https://marginfix.ai/insights/roas-attribution-field-guide/</link>
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    <pubDate>Tue, 21 Jul 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Paid media</category>
    <description>In our audits, reported ROAS overstates real blended return by 20 to 30% on average, because Meta, Google and GA4 each claim the same sale.</description>
  </item>
  <item>
    <title>How to audit your agency without firing your agency</title>
    <link>https://marginfix.ai/insights/how-to-audit-your-marketing-agency/</link>
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    <pubDate>Tue, 21 Jul 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Working with agencies</category>
    <description>Most leaks we find are nobody’s fault. An independent audit is not a vote against your agency, and we never sell media management, so there is no conflict.</description>
  </item>
  <item>
    <title>What “good” looks like at $10k to $250k/month spend</title>
    <link>https://marginfix.ai/insights/smb-marketing-spend-benchmarks/</link>
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    <pubDate>Tue, 21 Jul 2026 00:00:00 GMT</pubDate>
    <dc:creator>Cristian Bragau</dc:creator>
    <category>Benchmarks</category>
    <description>Benchmarks from our audit base, verified against revenue data, not survey answers: leak share, attribution gap and median finding by monthly spend band.</description>
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