Loyalty glossary · 2. Accounting and finance (25)
Actuarial Model
An actuarial model is the set of assumptions and calculations a loyalty programme uses to forecast the eventual cost of issued points, including redemption rates, expected breakage, and the accounting liability under accrual rules.
Every loyalty programme that issues points must estimate the cost of those points before the member redeems them. Accrual accounting requires a liability on the balance sheet the moment a point is earned, and ASC 606 forces the operator to separate the value of the loyalty benefit from the original sale. The actuarial model is the mechanism that turns assumptions about redemption, cost per point, and breakage into that liability.
The problem is that the model is entirely self-reported. An operator can change the breakage assumption from 20 percent to 30 percent and shrink the liability overnight without a single member changing behaviour. No outside auditor checks the model's forecasts against reality until years later, and by then the management that set them has often moved on.
Work the arithmetic, because the scale matters. A programme issues 800 million points in a year and values each point at 0.9 cents on redemption, so it books a 7.2 million dollar liability. Assume 25 percent breakage and 1.8 million dollars of that liability is never realised and releases back to revenue. Raise the breakage assumption to 35 percent and another 900,000 dollars appears on the P&L with no change in member activity. That is the exact same trap as breakage itself, but now it is hidden inside a complex forecast.
Award availability is the layer most models get wrong on purpose. If a loyalty programme restricts the number of reward seats or makes redemption thresholds high, actual redemption falls below what the model assumed. The model then treats that shortfall as breakage, not as a design failure. That distinction matters, because the first is a forecast correction and the second is a member experience failure that the model rewards.
An actuarial model should be a discipline, not a lever. The right use is to set a conservative redemption forecast, treat award availability as a promise to honour, and let actual member behaviour drive the number. The wrong use is to pick assumptions that flatter the liability and call it loyalty economics.