Research QuestionExcessive household borrowing has been identified as an important determinant of financial crises. In this context, borrower-based macroprudential instruments have been proposed as a possible remedy. In Germany, two instruments have been available to macroprudential supervisors since 2017: a cap on the loan-to-value (LTV) ratio and an amortization requirement but none of them has been activated so far. While a number of ex post analyses using mostly aggregate cross-country data show that the activation of instruments dampens credit and price growth, analytical methods quantifying the effects of such instruments prior to activation are rare. * We would like to thank Gaston Giordana, Michael Ziegelmeyer, one anonymous referee as well as participants in the ECB/BdP MPPG webinar and the Bundesbank research seminar for comments. Any errors are the sole responsibility of the authors. Disclaimer: The views expressed in this paper are those of the authors and do not necessarily reflect the views of the Deutsche Bundesbank or the Eurosystem.