ProtoDuty

Predict customs duties instantly and generate compliant labels for Asia-to-global sample shipments.

Score: 7.8/10United StatesMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Remote workers building physical product businesses suffer customs delays and unexpected duties when shipping samples from Asia to worldwide customers.

Solution

ProtoDuty uses AI to calculate exact duties and taxes based on product details, origin, and destination. It generates pre-filled customs labels and documents to avoid delays. Users prepay duties upfront for seamless border clearance.

Target Audience

Remote solopreneurs and early-stage founders building physical product businesses sourcing prototypes from Asia

Differentiator

Specialized for prototype samples under $800 with real-time carrier-specific duty predictions from Asia hubs.

Brand Voice

professional

Features

Duty Calculator

must-have12h

Input product HS code, value, weight to get instant duty/tax estimate.

Label Generator

must-have15h

Auto-generates CN22/CN23 customs forms and shipping labels.

Shipment Tracker

must-have10h

Real-time tracking with customs status alerts.

Prepay Duties

must-have8h

One-click prepayment of predicted duties via Stripe.

History Dashboard

must-have6h

View past calculations and shipments.

HS Code Lookup

nice-to-have8h

Search and suggest HS codes for prototypes.

Multi-Shipment Batch

nice-to-have6h

Calculate for multiple samples at once.

Export Reports

future4h

PDF summaries for accounting.

Total Build Time: 69 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
subscription_tiertextYes
created_attimestampNo

shipments

ColumnTypeNullable
iduuidNo
user_iduuidNo
hs_codetextNo
value_usdintNo
destination_countrytextNo
duty_estimateintYes
tracking_numbertextYes
statustextNo

Relationships:

  • β€’ user_id references users(id)

payments

ColumnTypeNullable
iduuidNo
user_iduuidNo
shipment_iduuidYes
amountintNo
stripe_idtextNo
statustextNo

Relationships:

  • β€’ user_id references users(id)
  • β€’ shipment_id references shipments(id)

API Endpoints

POST
/api/calculate-duty

Compute duty estimate

πŸ”’ Auth Required
POST
/api/generate-label

Create customs label PDF

πŸ”’ Auth Required
GET
/api/shipments

List user shipments

πŸ”’ Auth Required
POST
/api/track

Add tracking number

πŸ”’ Auth Required
POST
/api/prepay

Initiate duty prepayment

πŸ”’ Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind + shadcn/ui + React Hook Form
Backend
Next.js API Routes + Supabase Edge Functions
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Recharts for dashboardspuppeteer for PDF generation

Build Timeline

Week 1: Core auth and UI setup

20h
  • βœ“ Landing page
  • βœ“ User auth
  • βœ“ Basic dashboard

Week 2: Duty calculator MVP

25h
  • βœ“ Calculator form
  • βœ“ API endpoint
  • βœ“ Duty logic

Week 3: Label gen and tracking

25h
  • βœ“ Label PDF
  • βœ“ Shipment CRUD
  • βœ“ Tracking UI

Week 4: Payments and polish

20h
  • βœ“ Stripe integration
  • βœ“ Prepay flow
  • βœ“ Mobile responsive

Week 5: Nice-to-haves and testing

15h
  • βœ“ HS lookup
  • βœ“ Batch calc
  • βœ“ E2E tests
Total Timeline: 5 weeks β€’ 120 hours

Pricing Tiers

Free

$0/mo

No labels or prepay

  • βœ“5 calculations/mo
  • βœ“Basic tracker

Pro

$35/mo

50 shipments/mo

  • βœ“Unlimited calcs
  • βœ“Labels
  • βœ“Prepay
  • βœ“Priority support

Enterprise

$99/mo

Unlimited

  • βœ“All Pro
  • βœ“API access
  • βœ“Custom HS database
  • βœ“Team accounts

Revenue Projections

MonthUsersConversionMRRARR
Month 11005%$175$2,100
Month 68008%$2,240$26,880

Unit Economics

$12
CAC
$420
LTV
5%
Churn
88%
Margin
LTV:CAC Ratio: 35.0xExcellent!

Landing Page Copy

End Customs Nightmares for Your Prototypes

Calculate duties, generate labels, and prepay taxes in seconds – ship samples from Asia without delays.

Feature Highlights

βœ“Instant duty predictions
βœ“Automated customs forms
βœ“Real-time shipment alerts
βœ“Prepay to skip surprises

Social Proof (Placeholders)

"'Saved me $200 in unexpected fees!' - Alex, Hardware Founder"
"'Labels worked perfectly through EU customs.' - Sarah, Solopreneur"

First Three Customers

Post in Indie Hackers 'Hardware' thread offering free Pro access for feedback; DM 10 solopreneurs from Product Hunt hardware launches; share calculator tool on r/hardwarestartups with affiliate link.

Launch Channels

Product Huntr/SaaSIndie HackersTwitter #indiehacker

SEO Keywords

customs duty calculator chinaimport duties prototypes usahs code lookup samplesavoid customs delays asia

Competitive Analysis

Easyship

easyship.com
$29+/mo
Strength

Full logistics

Weakness

Overkill for samples, no prototype focus

Our Advantage

Sample-specific duty AI at half price

🏰 Moat Strategy

Proprietary duty prediction dataset from user shipments

⏰ Why Now?

Boom in no-code hardware (e.g., Crowd Supply) + US-China trade volatility increases duty unpredictability

Risks & Mitigation

technicalmedium severity

Duty rate API inaccuracies

Mitigation

Fallback to official gov APIs + user corrections

marketlow severity

Low awareness of pain

Mitigation

Free calculator as lead gen

legalmedium severity

Duty miscalculations liability

Mitigation

Disclaimers + insurance partnerships

Validation Roadmap

pre-build3 days

Twitter poll to 500 indie makers on duty pain

Success: 30% report delays

mvp14 days

Beta with 20 users, track usage

Success: 50% repeat calcs

launch7 days

PH launch, aim 200 signups

Success: 5% conv to paid

Pivot Options

  • β†’General ecomm duty tool
  • β†’HS code database SaaS
  • β†’Shipping aggregator

Quick Stats

Build Time
120h
Target MRR (6 mo)
$2,000
Market Size
$500.0M
Features
8
Database Tables
3
API Endpoints
5