Recent major earthquake disasters have highlighted the effectiveness of financial soft policies (e.g., earthquake insurance) in transferring seismic risk away from those directly impacted and complementing `hard' disaster risk mitigation measures. However, the benefits of existing financial soft policies are often not guaranteed. This may be attributed to: (1) their low penetration rate (e.g., in the case of earthquake insurance); (2) the fact that they typically neglect the explicit needs of low-income sectors in modern societies, who are often disproportionately impacted by natural-hazard driven disasters; and/or (3) their failure to consider the time-dependent nature of urban exposure. We contribute towards addressing these shortcomings by proposing a flexible framework for designing and assessing bespoke, people-centred, household-level, compulsory financial soft policies (including conventional earthquake insurance, disaster relief fund schemes, income-based tax relief scheme, or a combination of those) across cities under rapid urban expansion. The proposed framework leverages the Tomorrow's Cities Decision Support Environment, which aims to facilitate pro-poor disaster-risk-informed urban planning and design in developing country contexts. The framework specifically enables decision makers to strategically design and then assess the pro-poorness of mandatory soft policies, using innovative financial impact metrics that discriminate losses on the basis of income. We showcase the framework using the hypothetical expanding city, ``Tomorrowville", successfully identifying pro-poor seismic-risk-related financial soft policies for different instances in the lifetime of the urban system.