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Class 2 NICs wrong for 2022-23 and 2023-24 (rate, lower profits threshold) and 2015-17 (small profits threshold)

Status: Open.

#1887 In PolicyEngine/policyengine-uk;

· MaxGhenis opened on Sep 27, 2026

Fuel duty rates are calendar-year averages of an outdated schedule

Status: Open.

#1882 In PolicyEngine/policyengine-uk;

· MaxGhenis opened on Sep 27, 2026

Trading allowance is deducted on top of expenses already netted from self-employment profit

Status: Open.

#1880 In PolicyEngine/policyengine-uk;

· MaxGhenis opened on Sep 27, 2026

NICs thresholds are uprated before the Budget 2025 freeze ends in April 2031

Status: Open.

#1879 In PolicyEngine/policyengine-uk;

· MaxGhenis opened on Sep 27, 2026

Vehicle excise duty is not modelled: add VED rates and the vehicle details they depend on

Status: Open.

#1874 In PolicyEngine/policyengine-uk;

· juaristi22 opened on Sep 25, 2026

Tobacco duty is not modelled: add Tobacco Products Duty rates and tobacco quantities

Status: Open.

#1873 In PolicyEngine/policyengine-uk;

· juaristi22 opened on Sep 25, 2026

Alcohol duty is not modelled: add the strength-banded rates and alcohol quantities to charge them on

Status: Open.

#1872 In PolicyEngine/policyengine-uk;

· juaristi22 opened on Sep 25, 2026

Bus fares from journeys: person-level local-bus trips, concessionary eligibility and single-fare share as dataset inputs, with a per-journey fare cap parameter

Status: Open.

#1871 In PolicyEngine/policyengine-uk;

· juaristi22 opened on Sep 23, 2026

Add gov.dft.bus fare index parameters to enable bus fare cap reforms

Status: Open.

#1869 In PolicyEngine/policyengine-uk;

· vahid-ahmadi opened on Sep 21, 2026

Four more variables declare uprating but are missing from uprating_indices.yaml

Status: Open.

#1862 In PolicyEngine/policyengine-uk;

· vahid-ahmadi opened on Sep 18, 2026

Council tax integration: Nuffield Workstream 2 deliverable tracker

Status: Open.

#1854 In PolicyEngine/policyengine-uk;

· vahid-ahmadi opened on Sep 15, 2026

Scottish Two Child Limit Payment is in effect from 2025-04-06 but the scheme was never enacted

bugSomething isn't workingSomething isn't working

parametersAdding, changing or removing model parametersAdding, changing or removing model parameters

Status: Open.

#1852 In PolicyEngine/policyengine-uk;

· juaristi22 opened on Sep 8, 2026