work is licensed under a Creative Commons IGO 3.0 AttributionNonCommercial-NoDerivatives (CC-IGO BY-NC-ND 3.0 IGO) license (http://creativecommons.org/licenses/by-nc-nd/3.0/igo/ legalcode) and may be reproduced with attribution to the IDB and for any non-commercial purpose. No derivative work is allowed.Any dispute related to the use of the works of the IDB that cannot be settled amicably shall be submitted to arbitration pursuant to the UNCITRAL rules. The use of the IDB's name for any purpose other than for attribution, and the use of IDB's logo shall be subject to a separate written license agreement between the IDB and the user and is not authorized as part of this CC-IGO license.Note that link provided above includes additional terms and conditions of the license. This technical note examines demand-side constraints households in Latin America and the Caribbean face when making saving decisions, particularly households from lower income deciles. This emphasis is important because poverty can impact individuals' ability to process information, manage their time efficiently, or resist temptation, thus limiting their ability to make sound financial choices, forecast, or plan ahead. The note first reviews the main formal constraints on saving such as transaction costs, regulatory barriers and limited trust in financial systems. The note then considers constraints on saving in general, whether formal or informal, including social pressure, intra-household allocation issues, information and knowledge gaps, and behavioral biases when making financial choices. Reviewing advances in behavioral economics, particular emphasis is placed on how features of individual behavior can impact savings. Alleviating behavioral constraints could yield large welfare gains at relatively low costs.JEL classifications: C93, D13, D14, D87, O17