Core assumptions on this site are reviewed against GOV.UK and other official UK public-sector guidance. Primary sources are DWP policy guidance and HMRC published rates.
For the current build we reviewed official pages covering Universal Credit, Child Benefit, the High Income Child Benefit Charge, Pension Credit, PIP, Housing Benefit, Council Tax Reduction, SSP, maternity payments, ESA, JSA, Tax-Free Childcare, Sure Start Maternity Grant, Healthy Start, Free School Meals, Winter Fuel Payment and Cold Weather Payments.
Where a calculation is simplified or an assumption is made, that is stated on the relevant page. All rates reflect the 2026/27 DWP uprating unless otherwise noted.