Downloads and Links Downloads Please contact us for engagement letters related to legal services or corporate accounting and tax 2024 Estate/Trust Tax Engagement Letter IRS Form W-9 Terms and Conditions Addendum 2024 Tax Client Procedures AnyDesk client 2024 Tax Organizer SBA 2024 Individual Tax Engagement Letter IRS Form W-4 Links IRS Online IRS Account SSA Where's my refund? IRS Direct Pay (to pay individual taxes online) Dept of Commerce Mass Corporations Search Mass Tax Connect (to pay Mass tax online)