STINMOD+ is a microsimulation model that calculates the effects of tax and transfer policy on disposable incomes. It comprehensively models the tax and transfer system in Australia and includes all personal taxations and federally administered welfare payments other than the National Disability Insurance Scheme (NDIS). The model replicates the implementation of the programs in real life, incorporating elements such as income testing and asset testing. STINMOD+ is also used as a platform for advanced economic modelling and can be linked with other economic and behavioural models. It can provide estimates of poverty and inequality, cost of the reforms and the distributional impact of changes to the tax and transfer policies. The model can also be used as a tool to understand the work incentives of household members and any implied intra-household redistribution.