Economists at National Australia Bank (NAB) forecast that rental costs could rise by as much as 30 per cent, citing upcoming changes to tax concessions. The outlets report the increase as a potential outcome rather than a confirmed figure, linking the outlook to policy settings that affect how property investors respond to the rental market.

Across the reports, the central driver is the adjustment to tax treatment for rental properties. While the articles focus on the same NAB estimate and the same underlying policy explanation, they frame the impact primarily through the expected effect on investor incentives and housing supply decisions, which in turn feed into rental pricing. No alternative figures or competing forecasts are included in the provided excerpts, and the reporting is consistent in attributing the projection to NAB economists.

The coverage is therefore largely aligned on the headline claim: a possible 30 per cent rise in rents, associated with changes to tax concessions, with the context being the broader influence of taxation on rental affordability and market behaviour.