Maintenance does not have to be paid on a monthly basis. It can be paid in one lump sum. A buy out of maintenance raises important and complicated tax issues. Consult an attorney or accountant before deciding to go ahead with a lump sum payment. The IRS offers a number of publications that may help you as you negotiate support: IRS Publication 505, Tax Withholding and Estimated Taxes, is one, and IRS Publication 504, Divorced or Separated Individuals, is another. Both are available at www.irs.gov or by phone request at 800-829-3676.