Bill.com doesn't support selecting form1099 per bill line item. You'll need to edit each account to be used on form1099 bill line items, in order to signify them as 1099:
- Hover over the gear icon, and then click Settings
- Under Accounting, click Chart of Accounts
- Click the account name
- Click the edit icon
- Select the appropriate 1099 category:
- Box 1: Rents
- Box 2: Royalties
- Box 3: Other Income
- Box 4: Federal Tax Withheld
- Box 5: Fishing Boat Proceeds
- Box 6: Medical Payments
- Box 7: Nonemployee Compensation
- Box 8: Substitute Payments
- Box 9: Direct Sales
- Box 10: Crop Insurance Proceeds
- Box 13: Excess Golden Parachute
- Box 14: Gross Proceeds to Attorney
- Click Save
- Sync again