It doesnt halve but declines according to this schedule
Blocks 42402-5256000 = 5 VIA
Blocks 5256001-10512000 =4 VIA
Blocks 10512001-15768000 = 3 VIA
Blocks 15768001-21024000 = 2 VIA
Blocks 21024001-26280000 = 1 VIA
Blocks 26280001-31536000 = 0.5 VIA
This reward schedule is confusing. VIA has 1,237,584 blocks (30 second block times?) with a money supply of 16,224,325 VIA. That would make the block reward averaging 13.11 VIA/block. The current output is 5 per block and the emission is only about 1/4 the way to the drop to 4 VIA. Was the block reward prior to 42,402 something like 242 VIA?
With a 30 second block time, the current emission will yield 5,256,000 VIA per year. Starting from now, that's an inflation rate of 33.3%. After 1 year, the inflation will drop to 25%. After two years the rate drops to 20%. Then, the 4 VIA reward kicks in and inflation drops to 13% for the 4th year, starting from now. 13-16% is not bad, but the 33.3% annual inflation currently experienced is going to have a significant impact on price.
15s per block.
