Inflation itself will result in a 'tax increase'; it pushes you up into a higher bracket (as well simply being more $'s).
Hence, people have less spending power (after taking into account inflation adjusted after tax dollars, less money to spend).
Then if tax rates are increased, even more reduction in spending power.
This would resulting in a drag on the economy, unless the gov turns around and spends the increased tax amount they recieve.
If taxes are only raised on the wealthy, tp the extent it only reduces their savings (and not spending) the economic drag effect will be minimized. However, since their savings are decreased there may may a negative effect on the stock market (less demand for stocks as they have less to purchase such stocks).
IMO, higher taxes in a recession/depression are a bad idea; should only be done when the economy is 'hot'. You can reduce demand (and inflation resulting from excess demand) by higher interest rates or higher taxes.
I believe our recent inflation was not from excess demand, but from higher energy costs. The inflationary pressures expected from the recent huge gov bailout plans is not yet upon us.
Fern