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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
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

Privacy-Centric Tax Calculation Service

A secure, automated service that calculates DeFi tax liabilities using zero-knowledge proofs and MPC, ensuring compliance without exposing user transaction history or wallet balances.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by Web3-native engineers.

We architect, develop, and audit custom Solidity/Rust smart contracts that form the secure backbone of your dApp. Our development process is built for zero vulnerabilities and gas optimization from day one.

  • Full Lifecycle Development: From initial concept and technical design to deployment and post-launch maintenance.
  • Security-First Approach: Mandatory internal audits using industry-standard tools like Slither and Mythril before any third-party review.
  • Protocol Integration: Native support for ERC-20, ERC-721, ERC-1155, and custom standards tailored to your tokenomics.

Deploy with confidence. We deliver battle-tested contracts that protect your assets and your users' trust.

Our engineers specialize in complex logic for DeFi primitives (AMMs, lending/borrowing), NFT ecosystems (dynamic metadata, staking), and cross-chain interoperability. We ensure your contracts are upgradeable via transparent proxy patterns and include comprehensive event logging for seamless front-end integration.

key-features-cards
ENGINEERED FOR COMPLIANCE

Core Technical Capabilities

Our privacy-first tax calculation engine is built on a foundation of enterprise-grade security and auditable transparency, delivering the precision financial institutions require without compromising user privacy.

01

Zero-Knowledge Proof Integration

Implement zk-SNARKs and zk-STARKs to generate verifiable tax calculations from private transaction data. Users prove tax liability without exposing wallet addresses or transaction history, ensuring full regulatory compliance with privacy.

ZK-Proofs
Privacy Standard
On-Chain
Verifiable Audit Trail
02

Multi-Chain & Multi-Asset Engine

Real-time tax calculation across 50+ EVM and non-EVM chains (Ethereum, Solana, Cosmos) and 10,000+ token standards. Unified API delivers consolidated liability reports, eliminating manual reconciliation across protocols.

50+
Supported Chains
10k+
Token Standards
03

Regulatory Rule Engine

Dynamic, jurisdiction-aware tax logic that adapts to FATF Travel Rule, MiCA, IRS guidelines, and other global frameworks. Rule updates are deployed automatically, ensuring continuous compliance as regulations evolve.

FATF / MiCA
Compliance Built-In
Real-Time
Rule Updates
04

Enterprise-Grade Security & Audits

All core logic and ZK circuits undergo formal verification and audits by leading firms like Trail of Bits. Infrastructure is SOC 2 Type II compliant, with private key management via MPC or HSMs.

Trail of Bits
Security Audit
SOC 2 Type II
Certification
05

High-Performance Calculation API

Sub-second API responses for portfolio tax estimation, even for wallets with 10,000+ transactions. Built for scalability, handling millions of concurrent calculations with 99.9% uptime SLA.

< 1 sec
API Response
99.9%
Uptime SLA
06

Customizable Reporting & Data Export

Generate jurisdiction-specific tax forms (IRS 8949, Schedule D), CSV/PDF exports, and real-time dashboards. Seamlessly integrate reports into existing accounting software or compliance workflows via webhook.

IRS 8949
Form Ready
CSV/PDF/API
Export Formats
benefits
DELIVERING TANGIBLE RESULTS

Business Outcomes for Your Platform

Our privacy-centric tax calculation service is engineered to deliver measurable improvements to your compliance operations and user experience. Here are the concrete outcomes you can expect.

01

Regulatory Confidence

Automated, auditable tax reporting that meets global standards like DAC7 and IRS 1099. Eliminate compliance risk with calculations based on the latest tax jurisdictions and token classifications.

50+
Jurisdictions
0
Compliance Violations
02

User Privacy by Design

Implement tax logic without exposing sensitive user transaction data. Our zero-knowledge and MPC-based architecture ensures user privacy is never compromised for compliance.

ZK-Proofs
Privacy Tech
100%
Data Sovereignty
03

Developer Velocity

Integrate a complete, production-ready tax engine via a single API. We handle the complexity of chain forks, DeFi mechanics, and airdrops, so your team can focus on core product features.

< 2 weeks
Integration Time
1 API
Unified Endpoint
04

Operational Efficiency

Drastically reduce the manual effort and cost of tax season. Automate calculation, reporting, and form generation to reallocate finance and legal resources to strategic initiatives.

90%
Time Saved
24/7
Automation
05

Enhanced User Trust

Provide users with clear, accurate, and real-time tax liability dashboards directly in your app. Transparent reporting builds credibility and reduces support tickets during tax filing periods.

Real-Time
Calculations
CSAT +40%
User Satisfaction
06

Audit-Ready Architecture

Every calculation is backed by an immutable, verifiable audit trail on-chain. Demonstrate provenance and accuracy to regulators or auditors with a complete historical record.

Immutable
Audit Trail
100%
Traceability
The Strategic Decision for Your Protocol

Build vs. Buy: Privacy Tax Calculation

Compare the total cost, risk, and time investment of developing a compliant, privacy-first tax calculation engine in-house versus partnering with Chainscore's specialized service.

FactorBuild In-HouseChainscore

Development Timeline

6-9 months

4-8 weeks

Initial Security Audit

$20K - $50K (external)

Included

Regulatory Compliance Coverage

Limited (self-researched)

Global (US, EU, APAC frameworks)

Ongoing Maintenance & Updates

2-3 FTE engineers

Fully managed service

Time-to-First-Audit (IRS/IRS-equivalent)

High risk of delays

Pre-audit support & documentation

Total Year 1 Cost (Dev, Audit, Ops)

$250K - $600K+

$80K - $200K

Data Privacy Guarantee

Your liability

Zero-knowledge proofs, no PII exposure

Support & Incident Response

Internal on-call

24/7 SLA with <1hr response

how-we-deliver
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built to your exact specifications.

We architect and deploy custom smart contracts that form the backbone of your Web3 application. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and comprehensive audit practices to mitigate risk before deployment.

From tokenization to complex DeFi logic, we translate your business requirements into efficient, gas-optimized code.

  • Custom Token Standards: ERC-20, ERC-721, ERC-1155, and bespoke implementations.
  • DeFi & DAO Modules: Automated market makers, staking pools, governance systems.
  • Enterprise Integration: Cross-chain bridges, oracles, and secure upgrade patterns.
  • Deliverables: Full test suites, deployment scripts, and technical documentation.
tech-stack
SECURE & COMPLIANT FOUNDATION

Technology & Protocol Integration

We build your privacy-first tax engine on battle-tested protocols and enterprise-grade infrastructure, ensuring security, compliance, and seamless interoperability from day one.

01

Zero-Knowledge Proof Integration

Integrate zk-SNARKs (via Circom) or zk-STARKs to enable private transaction verification. Clients can prove tax compliance without exposing sensitive wallet data or transaction details.

EXPLORE
02

Secure Multi-Party Computation (MPC)

Implement threshold signature schemes (TSS) for secure, non-custodial key management. Distribute tax calculation logic across parties to prevent any single point of data exposure.

EXPLORE
03

Enterprise Blockchain RPC & Nodes

Deploy dedicated, geo-redundant nodes (Ethereum, Polygon, Solana) with 99.9% SLA. Ensures reliable, low-latency data access for real-time portfolio tracking and tax event ingestion.

99.9%
Uptime SLA
< 50ms
Avg. Latency
04

On-Chain Data Indexing

Build custom indexers using The Graph or Subsquid to efficiently query complex DeFi transactions (swaps, liquidity events, staking rewards) for accurate, auditable tax reporting.

EXPLORE
05

Compliance-First Smart Contracts

Develop and audit auxiliary smart contracts for tax withholding or reporting triggers. Built with Solidity 0.8+ and OpenZeppelin libraries, verified on Etherscan.

OpenZeppelin
Security Standard
Etherscan
Verification
06

Cross-Chain Interoperability

Integrate secure bridges (LayerZero, Axelar) and messaging protocols to calculate tax liability across Ethereum, L2s, and alternative L1s within a unified dashboard.

EXPLORE
Privacy-Centric Tax Calculation

Frequently Asked Questions

Get clear answers on how our confidential tax engine integrates with your DeFi or crypto product.

Our service deploys a secure, off-chain computation engine that processes your users' transaction data. We use zero-knowledge proofs (ZK-SNARKs via Circom) and secure multi-party computation (MPC) to calculate tax liabilities without exposing raw wallet addresses or transaction amounts. The system outputs anonymized, verifiable tax reports that comply with regulations like DAC7 and IRS guidelines, which you can then surface to your users via your application's UI.

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
Privacy-Centric Tax Calculation | Chainscore Labs | ChainScore Guides