White House Aides Push for 50% Cut In Dividend Taxes
White House officials reportedly urge Pres Bush to propose cutting taxes on corporate dividends for shareholders by about half as part of tax-cutting plan he will announce in January; proposal is intended to stimulate economy and reduce what many economists says is incentive in current law for companies to avoid paying dividends and to run up debt; many economists are skeptical that cut in dividend taxes would provide much immediate stimulus to economy, Bush's most important justification for new tax cuts; 50 percent cut would cost Treasury more than $100 million over 10 years, and tax benefits would overwhelmingly flow to nation's very wealthiest taxpayers (M)