TowerCo sale gain drives 367.6% NPAT growth as adjusted earnings fall

On management's own adjusted basis, which strips this out, revenue grew only 3.2%, EBITDAI fell 5.2%, and NPAT fell 7.8%, reflecting higher product costs and intensifying broadband and cloud competition.

Operating cash flow fell 19.4% to NZ$369.0m even as reported profit surged, and cash conversion dropped to 35.4% of EBITDAI, below Spark's historical range of 57.9%-134.6% and well under the 85.8% four-period average. Gross borrowings fell 31.7% to NZ$1b and cash rose to NZ$286.0m, so the balance sheet strengthened alongside the profit spike.

Cash conversion falling to 35.4%, against a historical mean of 85.8%, matters because profit that does not convert to cash weakens the case that reported earnings reflect distributable economic value; this is reinforced by free cash flow to NPAT collapsing to 13.7% from 102.2% in the prior half, even though free cash flow itself, at NZ$115.0m, remains high versus Spark's recent four-period average of NZ$11.6m.

The effective tax rate fell to 9.3% from 30.4%, well below the historical range of 30.4%-40.7%, widening the gap between PBT growth (198.1%) and NPAT growth (367.6%) by 169.5 percentage points. This means a meaningful share of the NPAT increase is a tax-rate effect layered on top of the one-off gain, not a repeatable operating outcome.

The historical pattern shows the first half is not typically second-half weighted, with HY22 contributing roughly half of FY22 revenue, but this offers only loose context rather than a forward test.

Given adjusted EBITDAI and NPAT both declined in the half, the release supports caution about underlying momentum into the second half rather than confidence that reported growth rates will persist, particularly since the one-off gain behind the headline PBT and NPAT increases is not a recurring item.

The 198.1% PBT growth and 367.6% NPAT growth are substantially explained by a one-off sale gain and an unusually low 9.3% tax rate, not by underlying trading, which management's own adjusted figures confirm through a 5.2% EBITDAI decline and 7.8% NPAT decline.

Cash generation lagged reported profit, with operating cash flow down 19.4% and cash conversion at 35.4%, below Spark's normal range, so the reported earnings jump is not matched by a proportional increase in cash delivered to the business. Balance-sheet strength (borrowings down 31.7%, cash up to NZ$286.0m) is real, but it reflects the sale proceeds rather than organic deleveraging from operations.

This briefing cannot assess the specific value or accounting treatment of the one-off sale gain, forward segment-level margin trends, or net debt to EBITDA for the current period, as these figures were not verifiable from the supplied data.