OK, so I am the new king of Earth. All current wars have ceased, and the whole planet operates as one kingdom. We have also decided on a currency. However, in order to pay off debt/create more buildings and roads/create more public services, I'd like to print off more money. That, in the normal world, would cause hyper-inflation, and drop a country's monetary value. It'd also mean prices for everything would go up. However, I want to stop this occurring. So, how do I get away with printing off more money and stopping inflation?
A tax on inflated goods might be a good idea, however that would also mean prices would go up even further to get profit. I'd also want my system to be humane, and keep the majority happy. Fortunately, because the whole world is a united kingdom, the problem of trading between countries with different currencies is nonexistent.