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

Automated Crypto Tax Compliance Engine for EVM Payments

A core smart contract and backend service suite that automatically calculates, withholds, and reports tax liabilities for payments and transactions on Ethereum and other EVM chains, ensuring real-time compliance for businesses.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, gas-optimized smart contracts built to your exact specifications.

We architect and deploy production-ready smart contracts that form the backbone of your Web3 product. Our development process is built on security-first principles and delivers audit-ready code from day one.

  • Custom Logic: Tailored Solidity/Rust contracts for DeFi, NFTs, DAOs, and enterprise use cases.
  • Security & Audits: Development with OpenZeppelin standards, followed by formal verification and third-party audit preparation.
  • Gas Optimization: Every contract is profiled and optimized to reduce user transaction costs by 15-40%.
  • Full Lifecycle: From initial design and testing to deployment, verification, and ongoing maintenance on your chain of choice.

We deliver contracts you can trust, with a focus on security, efficiency, and long-term maintainability.

key-features-cards
ARCHITECTURE

Core Components of the Compliance Engine

Our automated tax engine is built on a modular, enterprise-grade architecture designed for accuracy, reliability, and seamless integration into your existing EVM payment flows.

01

Real-Time Transaction Ingestion

Continuously monitors and ingests on-chain data from over 30 EVM networks. Our system classifies every transaction type—swaps, transfers, staking rewards, and NFT mints—for precise tax event identification.

30+
EVM Networks
< 2 sec
Sync Latency
02

Automated Cost Basis & Gain/Loss Calculation

Applies FIFO, LIFO, or HIFO accounting methods automatically. Calculates capital gains, income, and mining/staking rewards in real-time, compliant with IRS, HMRC, and other global tax frameworks.

100%
Audit Trail
FIFO/LIFO/HIFO
Methods Supported
03

Regulatory Rule Engine

A dynamic rules engine that adapts to jurisdictional tax laws (US, EU, UK, APAC). Automatically applies the correct treatment for DeFi, NFTs, and staking based on the latest regulatory guidance.

50+
Jurisdictions
Real-time
Rule Updates
04

Enterprise-Grade Reporting API

Generate Form 8949, Schedule D, and international equivalents (e.g., HMRC SA108) via a single API call. Export raw data or formatted PDF/CSV reports for direct filing or auditor review.

99.9%
API Uptime SLA
< 100ms
P95 Response
05

Privacy-First Data Processing

Process transaction data without storing sensitive user PII on our servers. Our zero-knowledge architecture ensures compliance with GDPR and CCPA while maintaining full calculation accuracy.

SOC 2
Compliant
ZK-Proofs
Architecture
benefits
STRATEGIC ADVANTAGES

Business Outcomes: Beyond Compliance

Our Automated Crypto Tax Compliance Engine for EVM Payments delivers more than just regulatory coverage. It unlocks operational efficiency, financial clarity, and strategic growth for your business.

01

Accelerated Financial Closing

Automate the reconciliation of millions of EVM transactions, reducing month-end financial closing from weeks to hours. Our engine provides audit-ready reports for GAAP, IFRS, and local standards.

90%
Faster Reconciliation
< 48 hours
Month-End Close
02

Real-Time Treasury Visibility

Gain instant, accurate insight into your crypto tax liabilities across all EVM chains. Proactively manage cash flow and reserves with dashboards updated on every block.

Real-Time
Liability Tracking
100%
Chain Coverage
03

Reduced Audit Risk & Cost

Eliminate manual errors with a system built on verified tax logic and immutable on-chain data. Every calculation is traceable back to the source transaction, slashing audit preparation time and fees.

70%
Lower Audit Costs
IRS & HMRC
Logic Verified
05

Future-Proof Regulatory Agility

Our engine dynamically adapts to new tax jurisdictions and evolving regulations like DAC8 and the Crypto-Asset Reporting Framework (CARF). Stay compliant without costly re-engineering.

50+
Jurisdictions
Auto-Updated
Tax Rules
06

Enhanced Investor & Board Confidence

Provide institutional-grade financial reporting that meets the scrutiny of auditors, investors, and regulators. Demonstrate mature governance and de-risk your cap table.

GAAP/IFRS
Compliant Reports
SOC 2 Type II
Data Security
Evaluating Your Tax Compliance Strategy

Build vs. Buy vs. Manual Process

A clear comparison of the time, cost, and risk involved in managing EVM payment tax compliance through different approaches.

Key FactorBuild In-HouseBuy (Chainscore)Manual Process

Time to Initial Deployment

6-12+ months

2-4 weeks

N/A

Upfront Development Cost

$250K - $500K+

$0 (API)

$0

Ongoing Engineering & Maintenance

2-3 FTE Engineers

Fully Managed

1-2 FTE Accountants

Coverage: EVM Chains & Tokens

Requires constant updates

30+ chains, auto-synced

Error-prone manual entry

Audit-Ready Reporting

Custom build required

Pre-built forms (8949, etc.)

Manual spreadsheet compilation

Real-Time Liability Calculation

Complex to implement

Real-time API

End-of-quarter estimates

Security & Data Integrity Risk

High (custom code)

Low (audited, SOC 2)

Very High (human error)

Scalability with Transaction Volume

Architecture challenge

Built for scale

Impossible at scale

Total Cost (First Year)

$500K - $750K+

$25K - $100K

$150K - $300K+ (labor/errors)

Guaranteed Accuracy & Support

Your responsibility

SLA & expert support

No guarantees

how-we-deliver
PROVEN FRAMEWORK

Our Delivery Methodology

We deliver a production-ready tax compliance engine in weeks, not months, using our battle-tested process designed for EVM complexity.

01

Discovery & Integration Audit

We analyze your existing payment flows and wallet infrastructure to map all taxable events. We identify data gaps and define the precise integration scope for a seamless deployment.

1-2 days
Initial Audit
100%
Event Coverage
02

Custom Rule Engine Configuration

Our team configures the compliance engine to your specific jurisdiction (US, EU, APAC) and token types (ERC-20, NFTs, DeFi rewards). Rules are based on live tax code APIs from providers like CoinTracker.

50+
Jurisdictions
Real-time
Rule Updates
03

Secure Data Pipeline Deployment

We deploy a secure, read-only node listener and data pipeline to your infrastructure. All data is encrypted in transit and at rest, with no private key exposure required.

SOC 2
Compliance
Zero-trust
Architecture
04

Staging & Validation Sprint

We run the engine against your historical transaction data in a staging environment. You receive sample tax reports (Form 8949, Capital Gains) for validation before go-live.

< 1 week
Validation Cycle
100%
Accuracy Guarantee
05

Production Launch & Monitoring

We manage the production cutover and provide 24/7 monitoring dashboards for data health and calculation accuracy. Includes automatic alerts for any reconciliation issues.

99.9%
Uptime SLA
< 5 min
Alert Response
06

Ongoing Compliance Updates

We handle all tax logic updates for new regulations, token listings, and protocol upgrades. Your engine stays compliant without requiring engineering resources.

Automatic
Updates
0
Maintenance Overhead
security
CORE SERVICE

Smart Contract Development

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

We architect and deploy custom smart contracts that form the foundation of your Web3 product. Our development process is built on security-first principles, utilizing Solidity 0.8+, OpenZeppelin libraries, and comprehensive audit patterns to mitigate risks before deployment.

From tokenization to complex DeFi logic, we deliver contracts that are gas-optimized, upgradeable, and built for your specific regulatory environment.

  • Token Systems: Custom ERC-20, ERC-721, and ERC-1155 implementations with minting, vesting, and governance modules.
  • DeFi Protocols: Automated Market Makers (AMMs), staking pools, yield aggregators, and lending/borrowing logic.
  • Enterprise Logic: Multi-signature wallets, asset tokenization platforms, and compliant KYC/AML integration hooks.
  • Full Audit Trail: Every contract undergoes internal review and is prepared for third-party audits from firms like CertiK or Quantstamp.
Automated Tax Compliance

Frequently Asked Questions

Get clear answers on how our EVM-native tax engine integrates, scales, and ensures compliance for your payment platform.

We provide a suite of APIs and webhooks designed for seamless integration. Our core solution includes a REST API for real-time tax calculation on transactions and a webhook system for automated reporting events. For dApps, we offer lightweight SDKs. Integration typically involves adding our API calls to your transaction flow and configuring settlement addresses for tax withholding. Our documentation includes specific examples for common frameworks like Hardhat and Foundry.

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
Automated Crypto Tax Engine for EVM Payments | Chainscore Labs | ChainScore Guides