Ticket Merger
Published August 16, 2026

Support Metrics That Matter

Six numbers worth reporting, and a warning about what duplicates do to all of them.

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The six

  • First response time. What customers feel first. Median, not mean.
  • Resolution time. Only useful when you control the resolution.
  • CSAT. Per interaction, asked at close. See the CSAT calculator.
  • First contact resolution. The quiet indicator of quality. Rising FCR usually means better answers, not faster ones.
  • Ticket volume per active customer. Raw volume tells you how fast you grew. This tells you whether the product is improving.
  • Backlog age. Not backlog size. A stable backlog of ageing tickets is a much worse signal than a growing one being worked.

    • What duplicates do to each

    This is the part rarely spelled out. A 12% duplicate rate does not add 12% noise evenly, it bends different metrics in different directions.

  • Volume is inflated, so growth looks worse than it is.
  • Cost per ticket is deflated, because the denominator grew while total cost rose.
  • First contact resolution is deflated, since one problem needed two contacts by definition.
  • CSAT is dragged down by customers who got two different answers.
  • SLA attainment is inflated by quickly-closed duplicates and dented by the twin that aged quietly.

    • A dashboard built on a queue with 12% duplicates isn't slightly wrong. It is wrong in five directions at once, which is why teams find the numbers hard to act on.

    Report the ratio too

    Add duplicate rate to your monthly reporting even if you do nothing about it yet. It contextualises every other number, and the first time you show it to a leadership team the follow-up questions are worth the effort on their own.

    Frequently asked questions

    What is the single most important support metric?+

    First response time for customer experience, first contact resolution for quality. Watching only one of them produces a team that is fast and unhelpful, or thorough and slow.

    How do I measure duplicate rate?+

    Sample manually, count merge-tagged tickets, or connect a detector that reports it continuously.

    Fix the number underneath the numbers

    Remove duplicates and every other metric on your dashboard starts describing reality.

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    Keep reading

    CSAT Calculator: Score Your Customer Satisfaction
    Calculate your CSAT score from positive and total responses, understand what the number actually measures, and see how CSAT differs from NPS.
    Duplicate Tickets: Why They Happen and What to Do
    A complete guide to duplicate support tickets: what causes them, what they cost, how to measure your rate, and the four ways teams deal with them.
    Support Cost Per Ticket Calculator (Free)
    Calculate your true cost per support ticket from headcount, salary, overhead and tooling, then see what duplicates are doing to that number.