Don’t Move Money Around
When a lender reviews your loan package for approval, one of the things they are concerned about is the source of funds for your down payment and closing costs. Most likely, you will be asked to provide statements for the last two or three months on any of your liquid assets. This includes checking accounts, savings accounts, money market funds, certificates of deposit, stock statements, mutual funds, and even your company 401K and retirement accounts.

If you have been moving money between accounts during that time, there may be large deposits and withdrawals in some of them.

The mortgage underwriter (the person who actually approves your loan) will probably require a complete paper trail of all the withdrawals and deposits. You may be required to produce cancelled checks, deposit receipts, and other seemingly inconsequential data, which could get quite tedious.

Perhaps you become exasperated at your lender, but they are only doing their job correctly. To ensure quality control and eliminate potential fraud, it is a requirement on most loans to completely document the source of all funds. Moving your money around, even if you are consolidating your funds to make it "easier," could make it more difficult for the lender to properly document.

So leave your money where it is until you talk to a loan officer.

Oh…don’t change banks, either.

That's very true.You should be aware in any aspects when buying a home.And plus,No Major Purchases of Any Kind

It is also a bad idea to make investments just before buying a home; again, you're decreasing the liquidity of your assets. If you've come across a new stock in which you'd like to invest or if it's a great time to buy bonds, wait until after you've settled the finances on your home.

Furthermore, you'll have to disclose all of your finances before buying a new home, which means accounting for every withdrawal and deposit in all of your accounts. This can get quite tedious, especially if you're trying to dig up cancelled checks for the new sofa and loveseat you just had to have three months ago.