A windfall in the Budget small print?

Changes to accounting principles may not be a subject to draw the eye for most but the Government's confirmation that they are ploughing ahead (albeit a year later than planned) with basis period reform will bring an early pay-day for HMRC. Without getting too technical, the changes mean that the tax point for many partnerships will be brought forward and so HMRC get their hands on tax earlier than usual when the new rules are implemented in 2024/25. In real terms what does this mean?  A dollop of cash for the Government a bit before time and a headache for partnerships wondering how to fund it...