IFRS and US GAAP authorised CMUCPP automatically maintains the constant purchasing power of constant real value non-monetary items (e.g. capital, all items in shareholders´ equity, provisions, salaries, wages, pensions, taxes, trade debtors/creditors, etc) only when updated in terms of the Daily CPI during low and high inflation, hyperinflation and deflation - ceteris paribus. European Accounting Association: "Capital maintenance is a competing objective of financial reporting."
When the whole money supply is inflation-adjusted or hyperinflation-adjusted on a daily basis under complete co-ordination (everyone doing it) in terms of a Daily CPI or daily black market rate there would still be inflation and hyperinflation in only the monetary economy, but no cost of /gain from inflation or hyperinflation. Monetary items, excluding bank notes and coins, would have constant real values. It would be as if there is no inflation or deflation or hyperinflation in the economy.
Inflation and deflation obviously have no effect on the real value of non-monetary items. The stable measuring unit assumption as implemented under traditional Historical Cost Accounting is destroying Iran´s non-monetary economy. It is impossible for hyperinflation to destroy Iran´s non-monetary economy.
Under hyperinflation daily inflation-adjustment of the entire money supply is possible by means of the daily black market rate. Under low inflation, high inflation and deflation this is possible by means of the Daily CPI that exists in all countries issuing government inflation-indexed bonds (95+ per cent of the world economy). These bonds trade daily and are priced daily in terms of a Daily CPI which is normally a one or two month lagged daily interpolation of the monthly published CPI. TIPS are priced like that daily.
Chile currently inflation-adjusts 25 percent of its broad M3 money supply on a daily basis in terms of their Unidad de Fomento. At least USD 3.5 trillion is inflation-adjusted daily in the global sovereign inflation-indexed bond market.
Whereas daily inflation-adjustment of the complete money supply would remove the cost/gain from inflation / deflation, including hyperinflation (not inflation/deflation or hyperinflation), from only the monetary economy (excluding from actual bank notes and coins), financial capital maintenance in units of constant purchasing power, the IASB´s alternative to Historical Cost Accounting, authorized in IFRS in 1989, in terms of a daily CPI or daily black market rate would remove the total cost of the stable measuring unit assumption from the entire economy; i.e., abandoning the HCA model.
It is thus currently possible to run an entire economy with constant real value monetary items (excluding bank notes and coins) and constant real value non-monetary items. The split of non-monetary items in variable real value non-monetary items and constant real value non-monetary items is inferred in IFRS.
I could explain this to Iran, but then the US government would be very upset with me. I have no intention of explaining this to Iran. They may read it on my blog though.
I am trying (quite unsuccessfully so far) to get Venezuela, which is in hyperinflation in terms of the IASB´s definition, to abandon traditional HCA and to change over to IFRS-authorized financial capital maintenance in units of constant purchasing power in terms of their Daily CPI. Venezuela issues government inflation-indexed bonds and this Daily CPI is available in the country.