Negative carryover impact
Negative carryover means a losing month is not written off — it is banked against you, and you earn nothing until later months have cleared it. This shows the difference over four months.
How the two models differ
Without carryover, each month stands alone: a negative month simply pays nothing, and the next positive month pays in full. With carryover, the negative balance is carried forward and every subsequent month goes to clearing it before you are paid anything.
One losing month can therefore absorb two or three winning ones. The tool shows what is still carried into the next period, which is the figure most affiliates discover only when their next statement arrives.
Where you meet this clause
It is most common in programs where a referred user can generate a net loss for the operator. It is usually in the agreement rather than on the landing page. Our glossary entry defines the term; this tool prices it.
What this does not model
Some programs cap how long a negative balance can be carried, or reset it annually. Those caps materially change the result and are not modelled here — check for them.