Quote from listedguru:How would this tax raise $177 billion per year when liquidity would drop 70% (or more)
Good question. The $177 bn figure is in fact the good old Dean Baker's $150 bn estimate posted in December 2009 on his firm's website (CEPR.com if I recall correctly, you know, the 30% union-financed one

. The multi-billion Baker's revenue 'estimate' is referenced in footnote 28 of the 'new' PDF document, called 'Taxing the Wall Street Casino', posted on the Institute for Policy 'Studies' website (URL: www(dot)ips-dc.org/reports/taxing_the_wall_street_casino ). Surprisingly though, the main author, Mr. Baker himself is left out from the long list of co-authors (4 pages per person - see how they reduced unemployment already!), even though he is the sole person responsible for their main 'finding', i.e. the revenue guesstimate.
Apart from riding on the most recent public fears (with the oil industry replacing slowly bankers) and apart from the same old revenue overestimate (which includes even such blatant errors as taxing both sides of every stock transaction and taxing exempt instruments such as government bonds), most of their old 'arguments' are repeated here as well. For instance on page 14, the IPS mistook turnover for taxable profits, disregarding typical industry markups. It is just intellectually dishonest to compare the typical 5% main street sales tax (levied on businesses with 50-100% markups) with a 'tiny' 0.0025 tax imposed on Wall Street market-making firms which earn (as in: 'revenues', not even 'profits') up to... 5 cents per $100 share, i.e. 0.0005 (see some firm quotes please). With truly high-frequency trading firms such as Tradeworx earning even less, having net profit margins of just 0.1 cents per share... that's 0.000017 profit margin for a typical share priced at $60... go on and tax them at 0.002500, but perhaps consider also imposing a 14700% corporate income tax on the currently most unpopular main street industry

A propos of the 'flash crash' argument raised by the IFS, Tradeworx has recently published their testimony given for the SEC in defense of the HFT community (called 'Tradeworx commentary for SEC on Market Microstructure' URL:
www.tradeworx.com/TWX-SEC-2010.pdf) - these notes written from the front lines should arguably contain more insights into the 'casino' industry, than the helicopter views of the IFS and CEPR union members.
As for the miraculously reincarnated 'Dean' Baker - we need to revisit the past to avoid repeating the same old mistakes...
"The total amount of missing tax revenues can be therefore as large as $96.6bn"
[
http://www.elitetrader.com/vb/showthread.php?s=&postid=2716631&highlight=Baker#post2716631 ]
'yes they used the transaction costs estimates from 1990 in a 2003 paper, and included in it: a) commissions, b) bid ask spreads, and c) market impact / slippage / missed opportunity costs / chasing the stock. And remember that they applied this cost to market makers...'
[
http://www.elitetrader.com/vb/showthread.php?s=&postid=2719067&highlight=Baker#post2719067 ]
'So what Mr. Baker has just admitted here?
1) FTT taxes have not been designed to raise revenue, but for behavior modification purposes: "An FTT will raise transactions costs and therefore reduce the volume of trading. This is one of the main purposes of the tax."'
[
http://www.elitetrader.com/vb/showthread.php?s=&postid=2716524&highlight=Baker#post2716524 ]
'using Mr. Baker's 1.25 adjustment factor, in "current money" the missing revenue would amount to $94.6 billion).'
[
http://www.elitetrader.com/vb/showthread.php?s=&postid=2705829&highlight=Baker#post2705829 ]