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Glass Box Transparency: How Every Calculation Works

2 min read26 January 2026
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  • The Formula β€” The exact mathematical formula used
  • Data Sources β€” Where each input value comes from (ABS Census, RBA, or user-entered)
  • Assumptions β€” Any estimates or defaults that were used
  • Limitations β€” What the calculation does not account for

Gross Rental Yield Example

Formula: (Annual Rent / Purchase Price) x 100 Inputs: Annual Rent = $26,000 (ABS suburb median rent estimate), Purchase Price = $620,000 (User-entered) Result: ($26,000 / $620,000) x 100 = 4.2%

Glass Box Benefits

  • Verify: Check the calculation against your own spreadsheet
  • Question: Challenge any assumption that does not match your situation
  • Adjust: Change inputs (price, rent, expenses) to see how results change
  • Trust: Know exactly what you are basing your decisions on
Virtual Buyers Agent handles this automatically.
See how it works

Written by

George
George

Founder, Virtual Buyers Agent

Data Engineer who built Virtual Buyers Agent after using a systematic framework to check the numbers on his own first investment property.

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  • -Guided workflow across every property

Written by

George
George

Founder, Virtual Buyers Agent

Data Engineer who built Virtual Buyers Agent after using a systematic framework to check the numbers on his own first investment property.

ShareinLinkedIn𝕏Post

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