In the EU VAT returns (Sales tax) are made monthly so we could have a monthly index of those. Employee wages are taxed weekly / monthly both income tax and nat

In the EU VAT returns (Sales tax) are made monthly so we could have a monthly index of those. Employee wages are taxed weekly / monthly both income tax and national insurance (which are used for social welfare etc.) and employers contribute to national insurance - these could be reported. We give companies limited debt liability in exchange for the social good they perform through their activities, a concept introduced in the 19thC. It is announced daily on the news the value of the stock exchanges, I don't think it is entirely crazy to do the same for contributions to the society that bears the cost of default.