These resources are specifically designed for SparkWell program participants. While other organizations may find them valuable for reference, some materials reference program-specific processes, timelines, and requirements that apply only within the SparkWell fiscal sponsorship context.
Independent contractors working with SparkWell Projects who need information about invoicing, payments, and administrative processes.
This article provides essential information for contractors working with SparkWell Projects, including how to submit invoices, get paid, and who to contact with questions.
Submitting invoices
Where to send invoices
Email completed invoices to bookkeeping@antientropy.org and cc your primary contact listed in Exhibit A of your contract.
What to include
Your invoice should include:
- Invoice date and number
- Your name and contact information
- Your Project's name in the Project/Organization field
- Detailed description of work completed or services provided
- Hours worked (if applicable) and rate
- Total amount due
- Any relevant supporting documents (receipts, expense documentation, etc.)
You can use your own invoice format if you prefer, or use the invoice template from bookkeeping@antientropy.org.
Getting paid
Payment schedule
Anti Entropy processes payments on Thursdays. To be included in the weekly payment run, submit invoices by 5:00 PM Central US time on Wednesday.
Bank details and tax forms
You'll receive a request through Mercury (Anti Entropy's banking platform) to provide:
- Your bank account details, typically:
- Account holder name (must match contractor agreement)
- Bank name
- Bank address (full address including country)
- Account number or IBAN
- SWIFT/BIC code (for international transfers)
- Routing number (for US banks)
- Bank branch code (if applicable in your country)
- W-9 form (for US contractors) or W-8BEN form (for international contractors), typically you will need:
- Tax ID number or equivalent in your country
- Physical address (for tax reporting purposes)
You can also provide bank details directly on your invoice if you prefer.
Why tax forms are required
- W-9 (US contractors): Required for IRS reporting and ensures proper tax documentation
- W-8BEN (international contractors): Certifies your tax residence is in a foreign country and clears Anti Entropy from US tax withholding on payments
Payment timing
Your first payment may take 1-2 weeks to process as your information is set up in the system, and there are sometimes delays for the first payment to process with banks. Subsequent payments follow the regular Thursday schedule.
Who to contact
For work-related questions Contact your primary contact listed in Exhibit A of your contractor agreement; usually the main person you interact with.
For payment and invoice questions Email bookkeeping@antientropy.org
For other administrative questions Email support@antientropy.org
Expense reimbursement
If your contract includes expense reimbursement (check Exhibit B of your agreement):
- Get written pre-approval from your primary contact before incurring expenses
- Submit expense documentation with your invoice
- Include receipts and appropriate documentation for all expenses
If your contract does not include expense reimbursement, you're responsible for covering all costs associated with your work.
SparkWell Policies
Please be aware of the following Anti Entropy and SparkWell policies: