It is extremely helpful for you to collect all of the financial information that you can get. This may be needed for proof if your case becomes contested or your spouse will not provide you with any information. This information may include the following:
Your most recent income tax return (and your spouse's if you filed separately)
The most recent W-2 forms for yourself and your spouse
Any other income documents (such as stocks dividends, interest, etc.)
Your spouse's most recent pay stub, hopefully showing year-to-date earnings
Deeds to real estate and titles to cars, boats, or other vehicles
You and your spouse's wills
Life insurance policies, stocks, bonds or other investment papers
Pension or retirement fund papers and statements
Health insurance cards and papers
Bank account and/or credit union statements
Your spouse's social security number and driver's license number
Names, addresses and phone numbers of your spouse's employer, and his or her close friends and family members
Credit card statements, mortgage documents, and other credit and debt papers
Copies of bills or receipts for recurring, regular expenses, such as electric, gas or other utilities, car insurance, etc.
Copies of bills, receipts, insurance forms, or medical records for any unusual medical expenses (including recurring or continuous medical conditions) for yourself, your spouse or your children
Any other papers showing what you and your spouse earn, own or owe