Supplementary data and codes, included in the manuscript "Magmatic addition rates differentiate periods of steady-state versus flare-up magmatism in the Central Andean arc", published on Communications Earth and Enviroment. Here we provide the files required to replicate the results of our study. In this repository, RecRate.xls provides the ages and volumes for each volcanic deposit, including ignimbrites. RecRate.m is a Matlab code that uses the data provided in RecRate.xls to calculate volumes and eruption rates over time. RecRateCrustal.m is a Matlab code that uses the results from RecRate.m to calculate crustal growth rates.