Establishing secure connection…Loading editor…Preparing document…

Invoice and CSA Template

This template is fully customizable. Edit the text, fill out the fields, and send it for signature. Give it a try!

Invoice and Client Services Agreement (CSA)

Invoice Number:

Invoice Date:

RECITALS

WHEREAS, Client Name: desires to obtain professional services from Service Provider Name: ; and

WHEREAS, Provider represents that it has the experience and capability to perform the services described herein and is willing to perform such services on the terms and conditions set forth in this Agreement effective as of Effective Date: .

SCOPE OF WORK

The Service Provider shall perform the services described below. The description of services, deliverables, milestones, and acceptance criteria are set forth in the Scope of Work.

ITEMIZED INVOICE

Description
Qty
Unit Price
Line Total

PAYMENT TERMS

Amount Due: . Payment is due within days of the Invoice Date unless otherwise agreed in writing.

Payment Schedule and Method: . Client shall remit funds to Remit To: .

Late Payment: Unpaid balances shall accrue interest at the lesser of 1.5% per month or the highest rate permitted by law, commencing on the day after payment is due. Additionally, a late fee of % per month or a flat fee of may be charged for overdue amounts.

TERM AND TERMINATION

Term: This Agreement shall commence on Start Date: and continue through End Date: unless earlier terminated in accordance with this section.

Termination: Either party may terminate this Agreement for convenience upon prior written notice of days. Either party may terminate for material breach by the other party if such breach is not cured within days after written notice of breach.

CONFIDENTIALITY

Each party acknowledges that it may receive confidential or proprietary information ("Confidential Information") of the other party. Except as required by law, each party shall (a) hold Confidential Information in confidence, (b) not use Confidential Information for any purpose other than performing under this Agreement, and (c) not disclose Confidential Information to any third party without the prior written consent of the disclosing party. Confidentiality obligations survive termination for a period of three years, unless a longer period is required by applicable law or by the nature of the Confidential Information.

WARRANTIES; LIMITATION OF LIABILITY

Provider warrants that services will be performed in a professional and workmanlike manner consistent with industry standards. EXCEPT FOR THE FOREGOING WARRANTY, SERVICES ARE PROVIDED "AS IS" WITHOUT OTHER WARRANTIES. IN NO EVENT SHALL EITHER PARTY'S AGGREGATE LIABILITY ARISING OUT OF OR RELATED TO THIS AGREEMENT EXCEED THE TOTAL FEES PAID BY CLIENT TO PROVIDER UNDER THIS AGREEMENT DURING THE PRIOR SIX (6) MONTHS, AND NEITHER PARTY SHALL BE LIABLE FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

GOVERNING LAW; DISPUTE RESOLUTION

This Agreement shall be governed by and construed in accordance with the laws of Governing State: , without regard to conflict of law principles. The parties shall first attempt in good faith to resolve disputes through negotiation; if unresolved, disputes shall be resolved by the state or federal courts located in the county specified by the governing law.

ENTIRE AGREEMENT

This Agreement, together with any exhibits, attachments, and referenced invoices, constitutes the entire agreement between Client and Provider with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements, proposals, and communications, whether oral or written. No amendment or modification will be binding unless in writing and signed by both parties.

ADDITIONAL PROVISIONS

Assignment: Neither party may assign its rights or delegate its duties under this Agreement without the prior written consent of the other party, except that Provider may assign to an affiliate or in connection with a merger or sale of substantially all assets.

Notices: All notices required or permitted under this Agreement shall be in writing and delivered to the contact information set forth on the first page of this document or as subsequently provided in writing.

Client:

Printed Name:

By:

Date:

Service Provider:

Printed Name:

By:

Date:

Enter text✕
Prepare your document for signing right on this page
  • 01 Edit the text and complete the fields
  • 02 Click Sign Now and on the next screen add recipients and signature fields in SignNow
  • 03 Start your free trial to sign and send your doc
Sign Now

What the Invoice and CSA Template Is

The Invoice and CSA Template combines a billing invoice with a client services agreement (CSA) into a single, fillable document that documents scope of work, pricing, payment terms, deliverables, and basic service-level commitments. It is designed for B2B and contractor engagements where one document simplifies billing and contractual terms, and it supports electronic completion and execution to streamline recordkeeping and audit trails.

Why use a combined Invoice and CSA Template

A single document reduces administrative steps, clarifies payment and service obligations, and supports enforceability when electronically signed under federal and state e-signature law (15 U.S.C. §7001; UETA-adopting states). It also centralizes audit information useful for tax, billing, and compliance reviews.

Why use a combined Invoice and CSA Template

Who commonly completes this combined template

The template suits any party that wants to reduce disputes by pairing deliverables and payment terms in one signed record.

  • Independent contractors and freelancers who bill clients and need clear scope and payment terms.
  • Small and mid-size businesses handling repeat service orders with standardized terms.
  • Accounts payable/receivable teams that require consistent invoicing and contract references.

Core components to include for clarity and enforceability

A professional Invoice and CSA Template should combine contractual terms and billing fields so each invoice doubles as a binding statement of work and payment demand, improving downstream collections and dispute resolution.

Scope

Detailed description of services, deliverables, milestones, and acceptance criteria so both parties share the same expectations and measurable outcomes.

Pricing

Line-item pricing, unit rates, discounts, taxes, and a clear total to avoid ambiguity during invoicing and accounting reconciliation.

Payment Terms

Due date, late fee policy, accepted payment methods, and remittance instructions to support timely payment and collections workflows.

Term & Termination

Contract length, renewal or termination triggers, notice periods, and post-termination obligations to reduce legal uncertainty.

Signatures

Signature blocks for authorized signers with date fields and any witness or notarization lines if required by jurisdiction or client policy.

Compliance

Tax identifiers, confidentiality clauses, governing law, and any industry-specific requirements to support audits and regulatory obligations.

Required invoice and agreement data at a glance

Invoice number: Unique identifier
Issue date: MM/DD/YYYY
Payment terms: Net 30, Net 45, etc.
Taxpayer ID: TIN or EIN
Service description: Concise line items
Total due: Currency format

Step-by-step: fill and finalize the template

Follow these sequential steps to prepare, sign, and deliver the combined invoice and CSA with minimal rework and clear auditability.

  • 01
    Prepare document: Complete scope, quantities, pricing, and dates.
  • 02
    Attach supporting files: Add receipts, W-9, or exhibits as needed.
  • 03
    Add signer fields: Place signature, initials, and date fields.
  • 04
    Execute and record: Have authorized signer e-sign and save the audit trail.

How to customize the template for online completion

Configure the template fields, conditional logic, and integrations before sending so automated routing, reminders, and accounting export work reliably.

Field | Configuration Template field name | Setup option
Template name Invoice + CSA | versioned naming
Branding fields Logo, company name, and contact block
Conditional fields Show tax lines only when applicable
eSignature settings Authentication level and signer order

Where to send or file the completed template

Decide destinations and archival rules up front to ensure accounting, legal, and operations each receive the copies they need for reconciliation and compliance.

  • Client: Signed PDF copy for client records
  • Accounting: CSV or integrated export to accounting system
  • Legal: Contract copy for contract management
  • Archive: Secure storage with retention policy

Distribution channels and integration considerations

Integrations reduce manual entry; verify format compatibility (PDF, DOCX, Excel) and access controls before automating routing.

  • Email delivery: Send signed copy as PDF
  • Accounting sync: Integrate with QuickBooks or ERP
  • Storage: Use Box, Google Drive, or secure S3

Key timing rules and common deadlines

Track both contractual payment windows and any tax or reporting deadlines triggered by payments to avoid penalties and reconciliation gaps.

Invoice issue and due dates:

Issue date and due date (e.g., Net 30) determine payment timeline

Payment reminders:

Send first reminder a few days before due date

W-9 requests:

Provide W-9 when requested; no filing deadline

1099-NEC reporting:

File and furnish by Jan 31 when required (IRS deadline)

Record retention start:

Retention periods begin on invoice creation date

Milestones from issue to archived record

A clear milestone sequence reduces missed payments and preserves audit evidence for taxes and disputes.

01

Issue invoice

Generate and send invoice with CSA attached

02

Receive payment

Confirm remittance and reconcile to ledger

03

Close engagement

Confirm deliverables accepted and record completion

04

Archive record

Store signed file with audit trail

Common preparation and submission mistakes to avoid

  • Missing or incorrect TINs that trigger backup withholding or delay payments and tax reporting.
  • Ambiguous scope descriptions leading to disputes over deliverables, acceptance, or additional charges.
  • Incomplete remittance instructions that produce delays or bank reconciliation mismatches and additional fees.
  • Failure to attach required tax forms (W-9) or proof of delivery, increasing administrative follow-ups.

Potential penalties and legal risks

Tax filing penalties: See IRC §6721; $60–$660+ per form
Backup withholding: 24% withholding rate applies
Late-payment fees: Contract may allow interest or fees
Breach claims: Damages for materially unmet obligations
Data exposure: PII misuse may trigger HIPAA or state law
Invalid signature: Missing intent or consent may void signing

Sample eSignature vendor comparison for executing the template

Comparison shows typical entry-level pricing and feature availability for eSignature vendors commonly used to sign invoices and CSAs; signNow is listed first per platform ordering rules.

signNow DocuSign Adobe Sign PandaDoc HelloSign
Starting Price $8/user/mo $15/user/mo $14/user/mo $19/user/mo $15/user/mo
Free Trial 7-day free trial Varies by plan Varies by plan Varies by plan Varies by plan
Bulk Send Yes Yes Yes Yes No
Audit Trail Yes Yes Yes Yes Yes
HIPAA Compliant Yes Yes Yes No No

Frequently asked questions about the Invoice and CSA Template

Answers to common questions about signing, notarization, tax reporting, and recordkeeping when you use a combined invoice and client services agreement.


Need help? Contact support

be ready to get more
Join over 28 million airSlate SignNow users
Sign Now
Company
Forms
Pricing
Resources
Knowledge base
Other Products
© 2026 airSlate Inc. All rights reserved.