Inferred merger rates for δ-function mass distributions of equal-mass binaries. The posteriors on the merger rates of GW170817-like and GW190425-like mergers are shown as violins (matching their chirp mass to the corresponding component mass of an equal-mass binary). At masses for which there are no detections, we show the 90% upper limit on the inferred rate under a Jeffreys prior. If the BNS mass distribution is skewed to significantly lower masses than we consider (component masses ≲1 M_⊙), the merger rate can be at most a factor of ∼2–3 higher than our reported merger rate.