Closed Claim Development Triangles

This dataset provides a detailed view of closed insurance claims over time, segmented by accident year and development period. It includes claim counts, settlement amounts, closure rates, and supporting metrics, enabling robust analysis of closure patterns, average settlements, and operational efficiency for insurers and actuaries.

  • last updated 2 Nov 2025
  • by GoMask
The brief that made it

Actuarial analysis of claim closure patterns and settlement costs

Sample rows

preview · 8 of 601 rows · all 9 columns
accident_yearintegerclosure_ratefloatdata_sourcestringdevelopment_period_monthsintegerclosed_claim_countintegertotal_settlement_amountfloataverage_settlement_amountfloattotal_reported_claimsintegerlast_updateddatetime
19930.15HistoricalArchive13232745.5915.17202023-11-09T15:32:18Z
19970LegacyDB20400blank112024-01-25T10:42:11Z
1908blankMicrofilmConversion19221390695blank2024-04-02T17:51:05Z
19860.05ManualEntry180110751075202023-12-10T22:11:09Z
19980.32HistoricalArchive14488542.51067.81252024-01-12T19:14:28Z
20020.31PolicyAdminSystemA60771298501686.362502024-03-14T08:44:23Z
20060.34BrokerPortal241183345902837.23502024-05-05T15:19:27Z
2001blankPolicyAdminSystemB12411097302676.1blank2024-04-22T21:10:18Z

What the 601 rows show

from the 601-row sample
  • 0.74median closure_rate
  • 52median development_period_months
  • 81median closed_claim_count
  • 215,000median total_settlement_amount
  • 2,962median average_settlement_amount
  • 133.5median total_reported_claims
closure_rate569 rows, in bands of 0.1
060120753826151830518811711100.51closure_rate →

Median 0.74, from 0.0 to 1.0.

data_source601 rows · top 10 of 15 values
  1. SimulatedFutureData82
  2. NextGenClaimsPlatform61
  3. BrokerPortal56
  4. MobileAppIntake56
  5. TelematicsIntegration46
  6. LegacyDB39
  7. HistoricalArchive38
  8. ManualEntry37
  9. PolicyAdminSystemA32
  10. PolicyAdminSystemB32
9 columns by typefrom the column list below
  • string 1
  • integer 4
  • float 3
  • datetime 1

Columns

9 columns in three groups
blueprint · 9 columns
columntypedescriptionexample
Text 1 column
data_sourcestringOrigin or system from which the claim data was extracted (e.g., internal system name, external provider).up to 100 · optionalHistoricalArchive
Numbers 7 columns
accident_yearintegerThe calendar year in which the insurance claims' underlying accidents occurred.1,900 to 2,1001993
development_period_monthsintegerNumber of months since the accident year, representing the development period for claim closure analysis.0 to 240132
closed_claim_countintegerNumber of claims closed during the specified accident year and development period.0 or more3
total_settlement_amountfloatAggregate settlement amount paid for all claims closed in the specified accident year and development period.0 or more2745.5
average_settlement_amountfloatAverage settlement amount per closed claim for the specified accident year and development period.0 or more · optional915.17
closure_ratefloatProportion of claims closed relative to total reported claims for the accident year at the given development period (0 to 1).0 to 1 · optional0.15
total_reported_claimsintegerTotal number of claims reported for the accident year (used to calculate closure rate).0 or more · optional20
Dates and times 1 column
last_updateddatetimeTimestamp when this record was last updated or refreshed.optional2023-11-09T15:32:18Z

Use it for

  • median closure…0.74569 rows

    An insurance dashboard

    Closure_rate and a breakdown of data_source. Excel, Power BI or Tableau.

  • What pattern can you find in 601 rows?

    A class exercise

    Hand out the rows and one question. Everyone works from the same 601 rows.

  • A software demo

    Believable rows with development_period_months, closed_claim_count and total_settlement_amount to fill a screen in front of a buyer.

Not quite right?

Make it yours.

Same 9 columns, your size and your rules. See 20 rows before you pay.

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This dataset601 rows9 columns
Yours10,000 rows9 columns

blueprint · closed-claim-development-triangles

Behind this dataset

Same schema. As many rows as you need.

These 601 rows came out of a blueprint — 9 columns with generation rules behind each one. Open it in Data Factory to retune a column, add your own, wire in foreign keys, and run it at the size you actually need.

Rules it was built with
  • Closed claim definition: final payment made, no reserves
  • Closure rate = Closed claims / Reported claims
  • Development of closures over time
  • Average closed claim value for benchmarking
  • Closure velocity indicates operational efficiency
  • Reopened claims affect closure statistics
  • Zero-pay closures tracked separately
  • Legal vs non-legal closure timelines
Rows
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Exports
CSV, JSON, JSONL, Parquet, SQL, Excel, TSV, XML
Licence
yours to use, including commercially
API slug
closed-claim-development-triangles

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