[
  {
    "totalBasisPoints": 800,
    "employerBasisPoints": 300,
    "reliefAtSourceBasisPoints": 2000,
    "validFrom": "2019-04-06",
    "validTo": null,
    "note": "Minimum 8% total, employer 3%, since April 2019; relief at source at the 20% basic rate"
  }
]