A surprising amount of SMP friction is not calculation friction at all. It is documentation and notice friction. Employers need to know when the worker should give notice, what proof supports the claim, and how to keep that process from becoming a last-minute scramble. BumpPay includes a dedicated guide because a clean estimate is not enough if the operational follow-through is weak.
The MATB1 form matters because it anchors the proof side of the conversation, while notice timing matters because payroll and leave planning do not happen in a vacuum. Teams need enough context to understand what should happen next, what can be reviewed calmly, and what needs to be lined up before the leave period begins. A strong support page should answer those questions directly and route back to the calculator when dates change.
If the calculator result looks good but the notice or proof trail is still unclear, the best next step is to use the guide as a checklist. Confirm the document posture, confirm the notice posture, and then return to the result summary so the payroll and documentation paths stay aligned.