From the start and end dates and the full pay definition, calculate three amounts that are often conflated: the statutory transition allowance, the compensation due where notice is not observed, and the non-statutory sub-district court formula still widely used as a settlement reference — each with the exact service period and the build-up behind it.
The transition allowance is the only one of the three an employee is in principle entitled to when the employer initiates the termination. Compensation for irregular termination is added only where the employer fails to observe the notice period — if notice is respected, this amount is not due. And the sub-district court formula has not been a statutory measure since 2015; it lives on as a negotiating reference, largely because at long service and higher ages it lands well above the transition allowance.
That distinction is exactly what makes a calculation useful: it gives the floor, the conditional item and the reference that often serves as a ceiling. The tool computes service time to the day, builds the pay definition visibly from the components you enter, and shows the A factor per age bracket. The report records the maximum amounts used, the tool version and the dataset vintage, so the calculation can be repeated exactly later — in proceedings, for instance.