A US county authority has put its support behind proposed bed tax increases and rebates on goods and services taxes to partially fund $400m (296.93m euro, £254.17m) worth of improvements to Miami’s Sun Life Stadium.

The Miami-Dade Board of County Commissioners heard an upgrade of the 25-year-old stadium would contribute $2bn (1.48bn euro, £1.27bn) in economic benefit over 15 years, and passed a resolution at their 23 January meeting urging the Florida Legislature to enact the changes.

The proposed hotel tax would add an extra penny in every dollar to current rates and the rebate would apply to goods and services bought from the stadium.

Renderings of the proposed development were revealed on 14 January by Miami Dolphins owner Stephen M. Ross, who said private funds of just over $200m (148.47m euro, £127.08) would cover the majority of construction costs.

The refurbished stadium will include more comfortable seats, better sightlines from around the facility, HD video screens, HD sports lighting, modern escalators and elevators, and an open-air canopy to shield fans from the elements while preserving the natural grass playing surface.

Ross said: "My goal is to secure the future of Miami-Dade and the Dolphins so we can remain a global competitor for sports and entertainment for at least another 25 years.”