Duty Simulator vs InstaDuty: Which AI Duty Calculator is Right for You?
Both Duty Simulator and InstaDuty promise AI-powered duty calculations, but they're built for different audiences. This guide breaks down the differences to help you choose the right tool. (For a broader comparison, see our roundup of the best AI customs classification tools in 2026 and our buyer's guide to customs classification software.)
Disclosure: We built Duty Simulator, so we're biased. But we'll give InstaDuty credit where it's due.
Key Takeaways
- InstaDuty is best for importers who need quick duty estimates from commercial invoices with minimal customs knowledge required
- Duty Simulator is best for customs brokers who need explainable AI reasoning for HTS classification and regulatory compliance
- For self-serve duty quotes, InstaDuty is simpler. For professional classification work, Duty Simulator provides the reasoning trail you need
Quick Comparison
| Feature | Duty Simulator | InstaDuty |
|---|---|---|
| Primary Audience | Customs Brokers | Importers (Self-Serve) |
| Core Focus | HTS Classification | Duty Calculation |
| AI Reasoning | ✅ Explainable | ❌ Results only |
| Email Integration | ✅ Native | ❌ Not available |
| Invoice Upload | ✅ Yes | ✅ Yes (PDF) |
| Accuracy Claim | High | 85-90% (varies by tier) |
| Free Tier | ✅ Available | ✅ 3 reports/month |
| Pricing Model | Per classification | Per report |
| Best For | Compliance professionals | Quick estimates |
InstaDuty: Overview
What It Does
InstaDuty is an AI-powered import duty calculator designed for importers who want quick landed cost estimates. Upload a commercial invoice in PDF format, and InstaDuty extracts product information, classifies HTS codes, and calculates applicable duties—including MPF, HMF, and Section 301 tariffs.
The platform positions itself as a self-service alternative to customs brokers for businesses that need fast duty estimates without compliance expertise.
Key Features
- Invoice Upload: Drag-and-drop PDF processing with AI extraction
- AI HTS Classification: Automatic HS code assignment from product descriptions
- Comprehensive Duty Calculation: HTS duties, MPF, HMF, Section 301, AD/CVD
- Real-Time Tariff Updates: Always current with latest tariff changes
- PDF Reports: Export-ready reports for customs brokers and accounting
- Bulk Upload: Process multiple items (10-20 depending on plan)
What InstaDuty Does Well
✓ Simple onboarding — Upload an invoice and get results in 60 seconds
✓ Transparent pricing — Clear tiers from free to $99/month
✓ All-in-one duty view — See HTS, MPF, HMF, Section 301, and more in one report
✓ Real-time updates — Tariff data stays current automatically
✓ Good for budgeting — Quick landed cost estimates before importing
Where InstaDuty Falls Short
✗ No explainable reasoning — You get a code, but not why that code
✗ Accuracy varies — 85% on free tier, up to 90% on premium
✗ Not for compliance — Results don't document your reasonable care process
✗ No email workflow — Manual upload only, no inbox automation
✗ Limited to calculations — Doesn't help with binding rulings or edge cases
Pricing
| Plan | Price | Reports/Month | Accuracy |
|---|---|---|---|
| Free | $0 | 3 | ~85% |
| Lite | $49/mo | 50 | ~88% |
| Standard | $99/mo | 200 | ~90% |
| Enterprise | Custom | Unlimited | ~90%+ |
InstaDuty's tiered accuracy is interesting—they're transparent that paying more gets better AI models.
Duty Simulator: Overview
What It Does
Duty Simulator is an AI classification tool built specifically for customs brokers and trade compliance professionals. Rather than just outputting a code, it provides the reasoning behind classifications—documenting the General Rules of Interpretation (GRI) analysis and similar product precedents.
This focus on explainable AI addresses the "reasonable care" requirement that customs brokers must demonstrate to CBP.
Key Features
- AI Classification with Reasoning: Get the HTS code plus the "why"
- Email Integration: Forward client inquiries directly to the platform
- GRI Analysis: Automated application of classification rules
- Precedent Matching: Find similar classified products
- Duty Calculation: Calculate all applicable duties and fees
- Broker Workflow: Built for how customs brokers actually work
What Duty Simulator Does Well
✓ Explainable results — Documentation trail for reasonable care compliance
✓ Professional-grade — Built by customs experts for customs experts
✓ Email workflow — Integrates with how brokers receive classification requests
✓ Edge case support — Better handling of complex, ambiguous products
✓ Audit-ready — Classifications include reasoning CBP expects
Where Duty Simulator Falls Short
✗ Steeper learning curve — More features means more to learn
✗ Overkill for simple estimates — If you just want a quick number, it's more than you need
✗ US-focused — Optimized for US Customs, not global
Pricing
Duty Simulator offers transparent pricing with a free tier. Check current plans at dutysimulator.com/pricing.
Head-to-Head: Key Differences
Classification Reasoning
This is the fundamental difference.
InstaDuty gives you an HTS code and a duty amount. That's the output—take it or leave it.
Duty Simulator shows you why that code was selected. Which GRI rules applied? What similar products were considered? This matters because:
- CBP expects it. Reasonable care means documenting your classification process.
- Edge cases need judgment. When a product could fit multiple codes, you need to understand the reasoning to defend your choice.
- Learning compounds. Understanding classifications makes you better at future ones.
Target User
InstaDuty assumes you're an importer who wants a quick answer. The interface is simple, the process is fast, and the output is a clean report.
Duty Simulator assumes you're a customs broker or compliance professional. The interface supports professional workflows, and the output includes the compliance documentation you need.
Workflow Integration
InstaDuty is a standalone tool. Upload a document, get a report, done.
Duty Simulator integrates with your existing workflow via email. Forward a client's inquiry, get a classification back, reply with results. This matters when you're processing dozens of classifications daily.
Accuracy vs. Compliance
InstaDuty emphasizes speed and accuracy rates (up to 90%).
Duty Simulator emphasizes compliance readiness. Even a "correct" classification isn't enough if you can't document how you arrived at it. When CBP audits, they want to see your reasonable care process—not just the final number.
When to Choose InstaDuty
InstaDuty is a good fit if you:
- Import occasionally and need quick duty estimates for budgeting
- Don't need compliance documentation (personal imports, small shipments)
- Want the simplest possible interface with minimal learning curve
- Need landed cost estimates fast before deciding to import
- Don't have customs expertise and want the tool to handle everything
Typical InstaDuty Users
- Ecommerce sellers estimating landed costs
- Procurement teams evaluating suppliers
- Small businesses doing occasional imports
- Anyone who needs "good enough" duty estimates quickly
When to Choose Duty Simulator
Duty Simulator is a good fit if you:
- Are a licensed customs broker processing client classifications
- Need audit-ready documentation for CBP reasonable care requirements
- Handle complex products that require GRI analysis and judgment
- Want email workflow integration for high-volume operations
- Care about understanding classifications, not just getting codes
Typical Duty Simulator Users
- Customs brokers (independent and firm-based)
- Trade compliance managers at importers
- Supply chain professionals responsible for classification
- Companies with in-house customs operations
Frequently Asked Questions
Can I use both tools?
Yes. Some users use InstaDuty for quick initial estimates, then Duty Simulator for formal classifications that require compliance documentation.
Which is more accurate?
Both use AI for classification. InstaDuty claims up to 90% accuracy on premium tiers. Duty Simulator focuses less on accuracy percentages and more on providing reasoning you can verify—because blind trust in any AI classification is risky for compliance.
What about Section 301 and AD/CVD duties?
Both tools calculate Section 301 tariffs and anti-dumping/countervailing duties. InstaDuty shows them in a clean summary. Duty Simulator includes them with the underlying HTS classification reasoning.
Do I still need a customs broker?
With InstaDuty: Probably yes, for anything beyond simple imports. InstaDuty doesn't replace professional advice.
With Duty Simulator: It's designed as a tool for customs brokers, not a replacement. It makes brokers more efficient, not obsolete.
Which has better customer support?
InstaDuty offers email support on all plans, with priority support on paid tiers. Duty Simulator offers dedicated support with emphasis on helping customs professionals get the most from the platform.
The Bottom Line
InstaDuty is a solid choice for importers who need fast, simple duty estimates without compliance complexity. Upload, calculate, done.
Duty Simulator is built for customs professionals who need to document their classification reasoning for regulatory compliance. It's not just about the code—it's about the defensible process.
Our Recommendation
- Importer doing occasional shipments? Start with InstaDuty's free tier.
- Customs broker or compliance professional? Duty Simulator's explainable AI is what you need.
- High-volume importer with in-house compliance? Duty Simulator scales better for professional workflows.
Ready to try Duty Simulator? Start your free account and see how explainable AI changes your classification workflow.