A renewal arrives as a single number. Your rates are going up some percentage, here is the new rate sheet, please confirm by a date that is usually closer than you would like.
That number is not a fact about your group. It is the output of several separate judgments, made by underwriters, each of which can be examined. Employers who accept renewals as given are usually not being lazy. They simply were never shown that the number came apart into pieces.
What the number is actually made of
Four components do most of the work.
Your own claims experience. What your group actually spent over a measured period, usually somewhere between nine and twelve months of a recent year. This is the part that feels most like it is about you, and it is, though the period chosen matters a great deal.
Trend. An assumption about how much medical and pharmacy costs will rise between the experience period and the coming plan year. Trend is a forecast, not a measurement. It is applied to everyone.
Credibility weighting. Your group is probably too small for its own experience to be statistically reliable on its own, so the carrier blends your data with pooled data from similar groups. How much weight your own experience receives is a judgment, and it moves the answer significantly.
Adjustments. Changes in enrollment, in the age and gender mix of your population, in benefits, in network, and in the carrier’s own fee structure.
Each of those is separable. A renewal that comes back at eighteen percent might be twelve points of your own experience and six points of trend, or it might be four points of experience and fourteen points of a heavy trend assumption applied to a group whose data barely counted. Those are very different situations and they call for very different responses.
The four questions
One. What experience period did you use, and what does it include?
Ask for the exact months. Then ask whether any large claims inside that window have concluded. A one time event that has run its course is a completed cost. If it is sitting inside the experience period driving next year’s rate, you are paying again for something that already happened. Carriers will frequently adjust for this when it is pointed out, and rarely volunteer it.
Two. What trend factor did you apply, and how does it compare to what you applied last year?
Trend is an assumption, and assumptions can be discussed. The useful follow up is whether the trend applied to your group differs from the carrier’s book average, and if so, why. Sometimes there is a good reason. Sometimes the answer reveals that the number is more conservative than your data supports.
Three. How much credibility did you assign to our own experience?
This question tends to surprise people on the other side of the table, in a productive way. If your experience received low credibility, then most of your increase is coming from pooled data about other employers, and your own good year is not helping you much. That is worth knowing, because it tells you whether managing your plan will actually change your rate or not.
Four. What is in the fixed costs, and what changed there?
Administration, network access, and any carrier fees. These are usually a smaller share of the increase than claims, and they are also the most straightforward to compare across carriers. If fixed costs moved disproportionately, ask what changed.
What to do with the answers
You are not trying to argue the carrier into a lower number by force. You are trying to find the places where the number rests on a judgment that your data does not support, and then presenting the data.
Sometimes the outcome is a revised renewal. Sometimes the outcome is confirmation that the increase is real and driven by claims that are genuinely ongoing, which is itself valuable, because it turns a vague sense of being overcharged into a clear picture of what is actually happening in your population. That picture is what makes the next conversation, about funding strategy or plan design or pharmacy, worth having.
Give yourself the time
None of this works ten days before the effective date. The practical fix is to start sixty to ninety days out and to ask for the underlying data at the same time you ask for the renewal, not after you have seen the number.
A renewal reviewed early is a negotiation. A renewal reviewed late is an acceptance with extra steps.