Auckland ratepayers will be saddled with a bill of roughly $220 million each year to run the City Rail Link - once it opens.

Chief executive Sean Sweeney says the project is 80 percent complete, but there's no guarantee the November 2025 deadline will be met.

Auckland Business Chamber CEO Simon Bridges says there's no excuse for these extended cost blowouts and delays.

"It's created a huge amount of problems. Just by the cost blowouts, the fact that this has taken too long and there doesn't seem to be a particularly good end in sight."

LISTEN ABOVE

• City Rail Link set to cost Auckland ratepayers $220m a year to operate once it opens in 2026
• More frustration comes from Auckland businesses affected by construction of CRL
• City Rail Link won't open until 2026 at the earliest