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The problem

Why this workflow breaks in generic systems.

Generic LOS math isn't reverse-native

Spreadsheets and bolt-on calculators don't model HECM and proprietary product mechanics correctly.

Outputs without traceability

When a number is questioned, there's no clean way to show which factor table, date, and assumption produced it.

Scenario comparison means manual re-runs

Every closing-date or payment-plan variation means starting over instead of comparing side by side.

See how it works
Product workflow

One controlled workflow.

Every calculation runs the same input-to-output chain, with a deterministic ID that reproduces the exact result later.

  • Input, factor table, and output chain, all traceable
  • Side-by-side scenario comparison
  • Calculation ID replay - same inputs, same outputs
  • Audit snapshot attached to the loan record
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RP / Loans / RP-205702 / Calculations

Principal limit

calc_01HXC9P · 04/28 14:01 UTC
Younger borrower age71
Maximum claim amount$512,000
Expected rate [HUD 4235.1 Ch.5]6.875%
Principal limit factor0.472
Principal limit$241,664
Scenario: Closing on May 6 (vs. Apr 28) changes the principal limit based on the projected HUD factor table. Compare scenario →
Capabilities

Core capabilities.

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Role relevance

What this changes for your team.

Operations

Faster, more confident scenario comparisons without waiting on a second calculation pass.

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Compliance

Every output traceable to its inputs and citations, ready for review without reconstruction.

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Executives

Confidence that the numbers driving production decisions are reproducible and auditable.

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FAQ

Common questions.

How do you keep calculations reproducible?

Each calculation is assigned a deterministic ID that ties the input set, factor table, and assumption date together. Replaying that ID always produces the same output.

Does this cover both HECM and proprietary products?

Yes - the engine models HECM and proprietary reverse mortgage mechanics, including principal limit, IMIP, growth factor, and set-aside calculations.

Can we compare multiple closing dates or payment plans at once?

Scenario comparison shows outcomes side by side, so evaluating a different closing date or payment plan doesn't mean starting a new calculation from scratch.

How do we verify a number during an audit or investor review?

Every output carries an audit snapshot with the input set, factor table, and citation references, attached directly to the loan record.

Does this integrate with the rest of the platform?

Calculations run against the same loan record used in origination, underwriting, and closing, so results stay connected to the file rather than living in a separate tool.

See it on your numbers

Walk through the calculation engine on your products.

We'll run sample loans through your states and payment plans so the math is grounded in how you actually price.