About 10 million U.S. households save online and more are going to open online savings accounts, money market accounts or CDs. According to Celent, a market-research firm, about 23 million U.S. households will have an onine accounts by 2010.To attract more customers, online banks usually pay higher interest rates on savings accounts, money market accounts, or CDs. Another feature is online banks always run great promotions to lure new customers.

WT Direct, the online branch of  Wilmington Trust FSB, is offering up to $250 bonus for depositing a certain amount of money to its high yield savings account for 60 days.

If you open a new high yield savings account by September 5, 2008, you will receive:

• $100 if your balance is between $10,000-$14,999
• $150 if your balance is between $15,000-$19,999
• $200 if your balance is between $20,000-$24,999
• $250 if your balance is $25,000+

This offer is available to new WT Direct clients only, through 9/5/08. To get the bonus, you have to enter the promotion code: WTF3SOB at the time of account opening. There is no minimum balance required to open the account. Account must remain open and in good standing and balance level cannot decrease from initial funding balance for 60 days to receive bonus. Bonus will be credited to client’s WT Direct account during the first week of November.

The current APY is 3.31% which is relatively high compared to other online banks. But after the first 60 days, the APY for the account will have two tiers: (a) a higher APY for accounts with balances of $10,000 or more (variable and currently 3.31% APY); and (b) a lower APY for accounts with balances of less than $10,000 (variable and currently 0.50% APY).

I personally think this is a great deal to catch. The promotion page can be found here.

Other high rate savings account are:

• HSBC Direct Online Savings Account 3.50% APY
  No fees and no minimums, FDIC insured
• Capital One Direct Banking 3.00% APY
  No fees and no minimums, FDIC insured
• E*TRADE Bank Complete Savings Account 3.30% APY
  No account fees and no minimums, FDIC insured
• Washington Mutual (WaMu) Free Checking 3.75% APY
  Free Checks, Free ATM Cash Withdraws
  Minimum balance to open is $1, FDIC insured
• ING Direct Electric Orange Checking Account Up to 3.40% APY
  No fees and no minimums, FDIC insured
• ING Direct Orange Savings Account 3.00% APY
• No fees and no minimums, FDIC insured