We architect and deploy production-grade smart contracts that power your protocol's logic. Our development process is built for security and speed, delivering a custom MVP in as little as 2-4 weeks.
LABS
Services
EVM-Based Tax Reporting Engine Development
We build core, modular tax calculation and reporting engines for tokenized assets on Ethereum and EVM-compatible chains. Handle complex events and jurisdiction-specific logic.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built to your exact specifications, from concept to mainnet deployment.
- Full Lifecycle Development: From initial design and
Solidity 0.8+coding to rigorous testing and mainnet deployment. - Security-First Approach: Every contract undergoes internal audits and follows
OpenZeppelinstandards before external review. - Protocol Specialization: Expertise in
ERC-20,ERC-721,ERC-1155, DeFi primitives, DAOs, and custom business logic.
We don't just write code; we deliver the secure, gas-optimized foundation your Web3 product needs to launch with confidence.
key-features-cards
TAX ENGINE COMPONENTS
Core Engine Capabilities We Build
We architect and deploy the foundational modules that power compliant, scalable, and automated tax reporting for your EVM-based platform.
01
On-Chain Transaction Ingestion
Real-time ingestion of EVM transaction data (transfers, swaps, staking rewards) from multiple chains. Built-in reconciliation ensures 100% data accuracy for tax liability calculations.
15+
Supported Chains
< 1 sec
Data Latency
02
Cost Basis & FIFO/LIFO Accounting
Automated calculation of capital gains/losses using FIFO, LIFO, HIFO, and specific identification methods. Handles complex scenarios like airdrops, hard forks, and wrapped assets.
100%
IRS/GAAP Compliant
Zero Manual
Entry Required
03
DeFi & Staking Income Engine
Accurate attribution of yield farming rewards, liquidity provider fees, and staking income across protocols like Uniswap, Aave, and Lido. Converts yield to fiat value at point of receipt.
50+
Protocols Supported
Real-time
Yield Tracking
04
Form 8949 & International Report Generator
Automated generation of IRS Form 8949, Schedule D, and international equivalents (e.g., HMRC in UK, ATO in Australia). Outputs ready for direct filing or accountant review.
20+
Jurisdictions
PDF/CSV
Export Formats
05
User Portfolio & Tax Liability Dashboard
White-labeled dashboard for end-users to view real-time tax estimates, unrealized gains, and historical reports. Reduces support tickets by providing self-service clarity.
Sub-second
Query Response
Fully Branded
White-label UI
06
Audit Trail & Data Integrity Module
Immutable logging of all calculation inputs, methodology choices, and report generations. Provides a verifiable trail for auditors and ensures defensible tax positions.
SOC 2
Compliant Design
Tamper-proof
Event Logs
benefits
DELIVERABLES
Business Outcomes for Your Platform
Our EVM-based tax reporting engine delivers more than just code. We build compliant, scalable infrastructure that directly impacts your bottom line and user trust.
01
Regulatory Compliance by Design
Engine built with IRS Form 8949, MiCA, and global tax directives pre-integrated. We handle the complex logic for FIFO, LIFO, and specific identification methods, ensuring your platform is audit-ready from day one.
50+
Jurisdictions Mapped
Zero
Compliance Gaps
02
Real-Time Portfolio & Tax Liability
Users see their estimated capital gains, income tax from staking/DeFi, and net positions updated with every on-chain transaction. Drives engagement and reduces support tickets for tax season.
< 5 sec
Portfolio Sync
Real-Time
Liability Calc
03
Automated Report Generation & Filing
Generate IRS-ready Form 8949 CSV, PDF summaries, and TurboTax/CoinTracker compatible files automatically. Reduces manual work for users and positions your platform as an essential financial tool.
1-Click
Report Export
5+
File Formats
04
Enterprise-Grade Data Integrity
Fault-tolerant architecture with cryptographic proof of calculation integrity. Every tax figure is verifiable against on-chain data, providing undeniable audit trails for users and regulators.
100%
Data Verifiability
99.9% SLA
System Uptime
05
Seamless Multi-Chain & DeFi Integration
Native support for Ethereum, Polygon, Arbitrum, Base, and 10+ other EVM chains. Accurately tracks complex DeFi events across lending, liquidity pools, and yield farming for complete tax coverage.
15+
EVM Chains
1000+
DeFi Protocols
06
Reduced Operational Overhead
Our managed engine eliminates the need for your team to maintain tax logic, data pipelines, or compliance updates. Free up developer resources to focus on core product innovation.
80%
Dev Time Saved
Managed
Compliance Updates
Scalable Implementation Roadmap
Phased Development Tiers
A structured approach to building your EVM tax reporting engine, from MVP to enterprise-grade solution.
| Feature / Deliverable | Foundation Tier | Compliance Tier | Enterprise Tier |
|---|---|---|---|
Core Transaction Ingestion Engine | |||
ERC-20/ERC-721/ERC-1155 Support | |||
DeFi Activity Parsing (Swaps, Staking, Lending) | |||
Multi-Chain Support (EVM L1/L2) | 1 Chain | Up to 3 Chains | Unlimited |
Real-Time Cost Basis Calculation (FIFO, LIFO) | |||
Automated Tax Form Generation (8949, Schedule D) | |||
Regulatory Reporting (FATCA/CRS, MiCA) | |||
Custom Rule Engine for Complex Events | |||
Audit Trail & Data Integrity Proofs | Basic | Advanced | Immutable |
API Integration & White-Label Portal | Read-Only API | Full API + Basic Portal | Full API + Custom Portal |
Smart Contract Security Audit | Optional Add-on | Included | Included + Continuous |
Deployment & Infrastructure Management | Self-Managed | Assisted Deployment | Fully Managed SLA |
Implementation Timeline | 4-6 Weeks | 8-12 Weeks | 12+ Weeks (Custom) |
Estimated Investment | $25K - $50K | $75K - $150K | Custom Quote |
how-we-deliver
PREDICTABLE DELIVERY
Our Development & Delivery Process
A structured, transparent workflow designed for FinTech compliance teams. We deliver a production-ready tax reporting engine in 8-12 weeks with zero surprises.
01
Discovery & Architecture
We conduct a deep-dive workshop to map your specific tax jurisdictions (e.g., IRS Form 8949, EU DAC8), data sources (on-chain, CEX), and reporting requirements. The output is a detailed technical specification and architecture diagram.
1-2 weeks
Phase Duration
100%
Requirements Locked
02
Core Engine Development
Our engineers build the core calculation logic for cost-basis (FIFO, LIFO, HIFO), income classification, and capital gains using battle-tested Solidity libraries. Every module includes comprehensive unit and integration tests.
4-6 weeks
Phase Duration
>95%
Test Coverage
03
Security & Compliance Audit
The complete codebase undergoes a rigorous internal audit focused on financial accuracy and data integrity. We prepare for external audits by firms like CertiK or Quantstamp, providing a full vulnerability report.
2 weeks
Phase Duration
Zero Critical
Findings Target
04
Staging & Client Review
We deploy the engine to a private staging environment with a full UI dashboard. Your team performs validation against historical transaction data. We iterate based on your feedback until accuracy benchmarks are met.
2 weeks
Phase Duration
100%
Accuracy Sign-off
05
Production Deployment & Handoff
We manage the deployment to your chosen EVM network (Mainnet, Arbitrum, Polygon) with full monitoring and alerting configured. We provide complete documentation, admin training, and ongoing support SLAs.
1 week
Phase Duration
99.9%
Uptime SLA
06
Ongoing Support & Updates
We provide maintenance, regulatory updates for new tax laws, and engine upgrades for new DeFi protocols or token standards. Optional managed service for complete hands-off operation.
24/7
Monitoring
< 48h
Critical Response
security
RELIABLE FOUNDATION
Blockchain Node Infrastructure
Fully managed, high-performance node infrastructure with 99.9% uptime SLA.
We deploy and maintain dedicated, non-custodial nodes across Ethereum, Solana, Polygon, and 15+ other protocols. Get sub-100ms API latency and multi-region redundancy for your dApp's core infrastructure.
- Zero DevOps Overhead: We handle provisioning, monitoring, upgrades, and security patches.
- Guaranteed Performance: 99.9% uptime SLA with real-time health dashboards and alerts.
- Enterprise Security: Dedicated instances, DDoS protection, and private RPC endpoints.
- Predictable Pricing: Transparent monthly plans, no surprise costs from public RPC rate limits.
Move from managing infrastructure to building your product. We ensure your nodes are always synced, secure, and fast.
EVM Tax Reporting Engine
Frequently Asked Questions
Get clear answers on development timelines, security, and support for your custom tax reporting solution.
We deliver a production-ready MVP in 6-10 weeks from kickoff. This includes requirements analysis, core engine development, integration with 2-3 target blockchains (e.g., Ethereum, Polygon, Arbitrum), and a basic reporting dashboard. Complex integrations with DeFi protocols or multi-chain aggregation can extend this to 12-16 weeks. We provide a detailed project plan with weekly milestones.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall