TSEM1473 - Introduction to trusts: new trust: administration period not followed by a trust
The period of administration starts at the date of death. It finishes when the personal representatives have discharged all their duties (TSEM6071).
If there is no trust, the administration period is usually dealt with by HMRC PAYE & SA. If the total liability income tax and capital gains tax for the whole administration period is expected to be in excess of £10,000 or the case is regarded as ‘complex’ (TSEM7376) and can only be dealt with by the issue of a Trust and Estate Self Assessment tax return, HMRC Administration of Estates Cardiff will assume responsibility. There are details at TSEM7204. There is also further guidance at CG30780.