Sweden's Ministry of Finance has published a government bill proposing that Statistics Sweden expand its Fasit microsimulation model to include data on household debt and debt payments. The measure is intended to improve analysis of households' resilience and sensitivity to economic shocks and to help the government and relevant authorities identify appropriate policy responses. Under the proposal, Statistics Sweden would collect information on households' mortgages and other loans from lenders. Because the collection is considered privacy-sensitive, the bill proposes limiting the new processing to a smaller set of personal data drawn from the smaller of Fasit’s two samples, MSTAR. Fasit is used to assess the effects of reforms in the welfare system, and MSTAR covers about 31,000 sampled persons or households and around 92,000 individuals after adding other household members. The proposed legislative changes would enter into force on 1 August 2026, subject to parliamentary approval.