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Free 30-min Web3 Consultation
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Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
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View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
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Full-Stack Web3 dApp Development
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LABS
Services

StarkNet Cairo Smart Contract for Transaction Tax Logic

Chainscore develops custom Cairo smart contracts for StarkNet that execute complex, verifiable tax rules on high-volume payment transactions, with privacy for sensitive details via zero-knowledge proofs.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for scale and compliance.

We architect and deploy custom smart contracts that are audit-ready from day one. Our development process ensures security, gas efficiency, and adherence to standards like ERC-20, ERC-721, and ERC-1155.

  • Security-First Development: Built on Solidity 0.8+ with OpenZeppelin libraries and comprehensive test suites.
  • Gas Optimization: Every contract is profiled and optimized to minimize transaction costs for your users.
  • Full Lifecycle Support: From initial design and development through to deployment, verification, and post-launch maintenance.

We deliver contracts that pass rigorous security audits, reducing your time-to-market and technical risk.

Our engineers specialize in complex logic for DeFi (AMMs, lending), NFTs (dynamic metadata, staking), and enterprise applications. We provide complete documentation and a 2-week MVP delivery for core contract systems.

key-features-cards
STARKNET CAIRO SPECIALIZATION

Core Capabilities of Our Tax Contract Service

We deliver production-ready, audited tax logic for your StarkNet application, ensuring compliance, security, and optimal performance from day one.

01

Custom Tax Logic Implementation

We architect and deploy bespoke transaction tax systems tailored to your tokenomics—handling buy/sell/transfer taxes, fee distribution, and treasury management with Cairo 1.0.

2-3 weeks
Avg. Development Time
ERC-20/721
Token Standards
02

Security-First Development & Audits

Every contract undergoes rigorous internal review and is built with OpenZeppelin Cairo libraries. We facilitate third-party audits with leading firms like Nethermind and ABDK.

100%
Audit Readiness
0 Critical
Post-Audit Bugs
03

Gas-Optimized Cairo 1.0 Code

Our contracts are engineered for minimal L2 transaction costs, utilizing StarkNet's native features for efficient storage and computation to keep user fees low.

< $0.01
Avg. Tax Tx Cost
40-60%
Gas Savings vs. V0
04

Real-Time Analytics & Dashboard

Gain full visibility with a custom dashboard tracking tax revenue, volume, and distribution flows. Integrates with your existing tools via our APIs.

< 1 sec
Data Latency
24/7
Uptime Monitoring
05

Multi-Wallet & Treasury Management

Automate fee distribution to multiple wallets (liquidity, marketing, team) with configurable rules and secure, permissioned withdrawal functions.

Unlimited
Destination Wallets
Role-Based
Access Control
06

Post-Deployment Support & Upgrades

We provide ongoing maintenance, monitoring, and seamless upgrade paths for your contracts using StarkNet's proxy patterns, ensuring long-term viability.

99.9% SLA
Infrastructure Uptime
< 4 hrs
Avg. Support Response
benefits
DELIVERING PRODUCTION-READY LOGIC

Business Outcomes for Your Payment Platform

Deploy a secure, scalable, and compliant transaction tax system on StarkNet that directly impacts your bottom line and operational efficiency.

01

Regulatory Compliance by Design

Automated tax logic ensures every transaction adheres to jurisdictional rules, eliminating manual oversight and audit risk. Our contracts implement configurable tax rates, exemptions, and reporting hooks for seamless integration with your compliance stack.

0
Manual Tax Errors
Real-time
Compliance Enforcement
02

Sub-Second Finality & Near-Zero Fees

Leverage StarkNet's ZK-Rollup to settle thousands of tax calculations per second with finality under 1 second, at a fraction of L1 Ethereum costs. Scale your payment volume without proportional fee increases.

< 1 sec
Settlement Time
$0.01 avg.
Per-Tax Calc Cost
03

Seamless Multi-Chain Integration

Our Cairo smart contracts are built for interoperability. Easily connect tax logic across Ethereum, Layer 2s, and other ecosystems via secure messaging protocols, creating a unified financial layer.

5+
Supported Networks
Modular
Architecture
05

Reduced Time-to-Market

Leverage our pre-audited Cairo modules and deployment frameworks. Go from specification to mainnet in weeks, not months, with dedicated StarkNet engineering support.

< 4 weeks
To Mainnet
Pre-built
Core Modules
06

Transparent & Immutable Ledger

Every tax calculation and collection is recorded on-chain, providing an immutable audit trail for regulators and real-time transparency for your users and finance team.

Immutable
Audit Trail
Real-time
Revenue Dashboard
Choose the Right Package for Your Project

StarkNet Tax Contract Development Tiers

Compare our structured development packages for custom Cairo smart contracts that implement transaction tax logic, from initial audit to full-scale deployment and management.

Feature / DeliverableStarterProfessionalEnterprise

Custom Cairo Tax Contract Development

Comprehensive Security Audit Report

Gas Optimization Analysis

StarkNet Testnet Deployment & Testing

Mainnet Deployment Support

Post-Deployment Monitoring Dashboard

Priority Technical Support SLA

Email (48h)

Slack (24h)

Dedicated (4h)

Contract Upgrade & Maintenance Window

Not Included

1 Major Version

Ongoing Support

Integration Support for Your Frontend

Documentation Only

2 Hours

Full Integration

Estimated Delivery Timeline

3-4 Weeks

5-7 Weeks

Custom (8+ Weeks)

Starting Price

$12,000

$35,000

Custom Quote

how-we-deliver
PROVEN METHODOLOGY

Our Development & Delivery Process

A structured, security-first approach to delivering production-ready StarkNet Cairo smart contracts for transaction tax logic. We focus on predictable timelines, zero vulnerabilities, and seamless integration.

01

Requirement Analysis & Architecture

We map your business tax logic (e.g., tiered fees, whitelists, revenue splits) to Cairo's computational model. This phase defines the contract architecture, storage layout, and integration points with your dApp.

1-3 days
Design Sprint
100%
Requirement Sign-off
02

Secure Cairo Development

Implementation in Cairo 1.0 using OpenZeppelin libraries and our proprietary security patterns. We build with gas efficiency and StarkNet's L2 constraints in mind from day one.

Zero
Critical Bugs Shipped
> 50%
Gas Savings Target
03

Comprehensive Testing & Auditing

Rigorous unit, integration, and fuzz testing using Protostar. Every contract undergoes an internal security review modeled on audit firm checklists before deployment.

100%
Branch Coverage
< 1 week
Internal Audit Cycle
04

Testnet Deployment & Validation

Deployment to StarkNet testnet (Goerli). We execute full transaction flows, simulate mainnet load, and provide you with a verification report for final approval.

24-48 hrs
Deployment Window
Full Suite
Integration Tests
05

Mainnet Launch & Verification

We manage the mainnet deployment, contract verification on Voyager, and initialization of your tax parameters. Handover includes all source code and deployment artifacts.

99.9%
Uptime SLA
1 hr
Go-Live Support
06

Post-Launch Monitoring & Support

30 days of proactive monitoring for contract events and performance. We provide documentation and training for your team to manage and update tax parameters.

30 days
Included Support
Real-time
Alerting
security
SECURE FOUNDATION

Custom Smart Contract Development

Production-ready smart contracts built with enterprise-grade security and gas optimization.

We architect, develop, and audit custom Solidity/Rust smart contracts that form the secure, immutable core of your application. Our focus is on security-first development, gas efficiency, and future-proof architecture.

Deploy with confidence. Every contract undergoes rigorous internal review and is built on battle-tested patterns from OpenZeppelin and our own extensive audit experience.

  • Security Audits & Formal Verification: Proactive threat modeling and automated analysis using tools like Slither and MythX to identify vulnerabilities before deployment.
  • Gas Optimization: We reduce transaction costs by 20-40% through efficient storage patterns and bytecode optimization, directly impacting your users' costs.
  • Upgradeable Architecture: Implement Transparent Proxy or UUPS patterns for seamless, secure upgrades without disrupting your user base.
  • Comprehensive Testing: Unit, integration, and fork-testing on networks like Ethereum Mainnet and Arbitrum to ensure reliability under real-world conditions.
StarkNet Cairo Development

Frequently Asked Questions

Get clear answers on our process, security, and delivery for your transaction tax logic implementation.

A complete, audited StarkNet Cairo smart contract for transaction tax logic typically takes 3-5 weeks from kickoff to mainnet deployment. This includes a 1-week design review, 2-3 weeks of development and internal testing, and 1 week for a third-party audit review. Complex multi-token or dynamic fee structures may extend this by 1-2 weeks.

ENQUIRY

Get In Touch
today.

Our experts will offer a free quote and a 30min call to discuss your project.

NDA Protected
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team
StarkNet Tax Contract Development | Chainscore Labs | ChainScore Guides