This paper takes a critical look at the effect of firm size on the profitability of Ghanaian Insurance brokerage firms. Specifically, the paper examined the effect of firm size (measured by total assets) on firm profitability (measured by ROA and ROE) from a lagged perspective (i.e. the lagged effect of size), non-linear perspective, and across quantiles, using fixed effects, random effects, robust and PCSE estimation techniques. Analysing a unique data of 64 insurance brokers from 2007 to 2015, the findings show that firm size exhibited a significant and positive short term effect on firm profitability but the relationship turned negative in the long term showing a non-linear relationship of size on profitability, with an inflection point above the mean firm size. However, the non-linear effect was evident in the 50th and above percentile of brokers but not in the lower quantiles. The lagged values of size also significantly affected firm profitability but it was not as pronounced as the short term effects. The study recommends larger Ghanaian insurance brokerage firms take a staggered and reflective approach in its growth measures.

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Keywords

Profitability; Size; Non-linear effect.