IL E-Signature API
ClosingSignIQ in Illinois
Embed legally binding e-signatures in your Illinois application. Every signed document sealed with an X.509 digital certificate from our Certificate Authority. Illinois has adopted UETA. ESIGN Act compliant. $0 per-envelope cost.
IL E-Signature Law
Electronic signatures are legally binding in Illinois.
ESIGN Act
Federal Law (2000)
15 USC §7001. Electronic signatures have the same legal effect as wet-ink signatures in all 50 states.
UETA Status
Illinois has adopted UETA
Illinois adopted the Uniform Electronic Transactions Act, providing state-level recognition of electronic signatures.
Remote Notarization
Legal since 2021
Illinois permits Remote Online Notarization (RON). Illinois Compiled Statutes 5 ILCS 312 (Electronic Notarization Act)
Notary Fee Cap
$5 per notarial act; $25 for RON
ClosingSignIQ e-signatures are $5/envelope (Pay-Go) or FREE on Pro+, regardless of state. Notarization fees follow state law.
IL Documents
Common Illinois documents for e-signature.
Real estate closing documents
Powers of attorney
Affidavits
Business contracts
Immigration documents
Key Illinois industries using ClosingSignIQ:
Financial servicesManufacturingHealthcareAgriculture
Illinois
E-signatures where Illinois does business.
Video by Ricky Esquivel on Pexels
Integration
Add e-signatures to your Illinois app in minutes.
your-illinois-app/api/sign.ts
// Send a real estate closing documents for e-signature in Illinois
const envelope = await fetch('https://closingiq.app/api/v1/signing/envelopes', {
method: 'POST',
headers: { 'X-API-KEY': process.env.CLOSINGSIGNIQ_KEY, 'Content-Type': 'application/json' },
body: JSON.stringify({
title: 'Real estate closing documents — Illinois',
signers: [{ name: 'Signer Name', email: '[email protected]' }],
}),
});
// X.509 certificate + SHA-256 audit trail included automaticallyAPI Pricing
Start free. Scale in any state.
Free
$0
5 envelopes/month
- ✓ API + OAuth
- ✓ Audit trail
- ✓ Email notifications
Starter
$29/mo
50 included, then $0.50
- ✓ Embedded signing
- ✓ X.509 certificate
- ✓ Webhooks
Growth
$79/mo
250 included, then $0.35
- ✓ White-label
- ✓ our CA certs
- ✓ SMS notifications
Scale
$199/mo
1,000 included, then $0.25
- ✓ Full white-label
- ✓ Templates API
- ✓ 99.9% SLA
FAQ
E-signature API questions for Illinois.
Is remote online notarization legal in Illinois?
Yes. Illinois passed the Electronic Notarization Act in 2021, establishing a permanent RON framework. Notaries must complete additional training and register as electronic notaries with the Secretary of State. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
What are the notary fees in Illinois?
Illinois caps in-person notary fees at $5 per act and RON fees at $25 per act. The higher RON fee reflects the technology costs associated with remote notarization. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
How affordable is Illinois apostille service?
Illinois offers one of the most affordable apostille services in the nation at just $2 per document. This makes it cost-effective for businesses and individuals needing multiple documents authenticated. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
Is RON used for real estate closings in Illinois?
Yes. Illinois is an attorney-required state for real estate closings, and RON enables attorneys and notaries to conduct closings remotely, which has become popular in the Chicago metro area. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
What identification is required for RON in Illinois?
Illinois RON requires government-issued photo ID verification plus knowledge-based authentication or credential analysis. The notary must verify identity at the beginning of the audio-video session. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
Can I use an interpreter during notarization in Illinois?
No. Illinois operates under the doctrine of direct communication, which requires the notary to communicate directly with the signer in a shared language. Third-party interpreters are not authorized for the notarial ceremony. If you need language assistance, your session can be routed to one of the six states that permit interpreters (AZ, CO, FL, MS, NC, PA). ClosingIQ offers 189-language document translation. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
What makes ClosingSignIQ different from DocuSign or BoldSign?
ClosingSignIQ is the only e-signature API with built-in AI document scanning and X.509 digital certificates from our Certificate Authority. Every signature includes a SHA-256 hash-chained audit trail. Plus, our API costs 80% less than DocuSign with $0 per-envelope infrastructure costs.
Other States
ClosingSignIQ API is available in all 50 states.
Ship e-signatures in Illinois today.
Free tier. X.509 certificates. SHA-256 audit trail. ESIGN Act + Illinois UETA compliant.