Business document solutions provider NAG Forms & Supplies, established in 1986, has made shopping for businesses easy and profitable. At NAG Forms & Supplies Inc.Business document solutions provider NAG Forms & Supplies, established in 1986, has made shopping for businesses easy and profitable. At NAG Forms & Supplies Inc., you can get all your checks, envelopes, 1099, W2 tax forms, and tax return supplies in one place for all your business needs. With our highly crafted products to make your tax filing supplies and business check printing accessible to streamline your operations, you can be much more at ease.