We're never going to let go of our notes and coins - so the Reserve Bank is not only looking at digital currency for the future, it's also trialling cash services for small towns

With banks deserting small towns and leaving just an ATM behind, the Reserve Bank is starting to think about how communities can get better access to money.

What happens when cash is king - and then your bank leaves.

A businessman in a town which hasn't had a bank for three years says the Reserve Bank's plans to put more cash in the hands of its people and introduce digital cash could save hours of time.

John Bougen is chairman of the local business association in Reefton. He's spent most of his life in Auckland and was co-founder of the Dress Smart shopping mall franchise. After spending years working in that industry, he has moved to a town that has very few stores.

The town's population hovers around 1,000. Retailers can feed notes into a flash cash machine left behind by the BNZ when it went, but coins are an issue.

The Reserve Bank is looking at putting more cash into the hands of these kinds of communities through "cash trials". This could involve security vans being subsidised to pick up cash from small businesses or installing smarter ATMs.

Bougen says the town has learned to cope without a bank.

"Initially, it was a real bugger,'' Bougen says.

"But people adapt. So the businesses now have change groups. If anyone's off to Greymouth, which is only an hour away, they will pick up change for anyone who wants it ... somebody picks it up and comes back with a satchel full of coins."

Despite this, he says cash is a "West Coast tradition" and he thinks the cash trials would "absolutely" help.

"We did talk at some point about that with the BNZ, but as they said they're just one of many banks. If there was some central organisation that could handle that and they come and pick up your cash and take it away without having to go and stand at the machine, that'd be wonderful. If that was the case, then you're going to be better off time-wise than you would have been even before the bank closed. If somebody's going to come along in an armoured vehicle and snatch your bag from you and keep driving down the road, well that's great."

He also thinks a new form of digital cash would "certainly have some merits".

"Everyone carries a mobile, it would be a lot easier, but New Zealand we hate giving away on stuff we've always had ... cash has been something we've had right from day one, it's the gold standard as it were." …

Go to this episode on rnz.co.nz for more details