Auckland Mayor Len Brown says the council faces tough choices as part of a new 10-year budget that kicks off today.
In a statement ahead of a budget committee meeting this afternoon, Mr Brown said the council would have to look at delaying "lower priority capital projects" for more significant projects.
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He did not mention the $2.86 billion city rail link, but Mr Brown is under pressure to come up with a funding package for the project, which he wants to start building in 2016.
"With Auckland continuing to experience strong growth, we will need to work hard to strike a balance between investing in vital infrastructure, and keeping our rates and debt low and sustainable," Mr Brown said.