Between February 24th and 25th, 2016, we sent 349 emails from two different accounts, presenting ourselves as two graduates willing to incorporate a start up, an approach that is part of a growing stream of literature (Costa 2017, Giulietti et al. 2017, Gottschalk et al. 2017). These emails were identical (same names, same text) but for one, crucial, detail: notaries in the treatment group were asked for the incorporation of a simplified ltd (i.e. free-of-charge type), while those in the control group for a standard ltd (i.e. the more expensive type). We asked for a meeting and an estimate of the incorporation costs. We received 106 answers, the last on March, 4th 2016, with an average response rate of 30 percent, a number in line with similar surveys. Identification is achieved by means of the simple randomization. Given the specific setting (binary dependent variable) we estimated the average treatment effect with a logistic regression.