Integral Sales Tax
Managed sales tax compliance
Managed sales tax compliance for growing multi-state businesses.
Stop managing sales tax internally. IST combines compliance strategy, managed filings, automated document processing, and a dedicated specialist team so nexus, registrations, notices, and filing deadlines do not fall back on your accounting team.
Multi-state
Nexus analysis, registrations, and filing support
Managed
Filings, notices, remittance, and follow-through
Human-backed
Dedicated specialists supported by automation
Your compliance operating layer
IST connects your business data to the work required to stay compliant across states, from nexus monitoring and registrations to filings and notice resolution.
Nexus monitoring
Active
Filing calendar
Managed
Notice queue
Tracked
Registrations
New state registrations handled correctly.
Filings
Returns and remittance managed on schedule.
Notices
State correspondence tracked through resolution.
Nexus
Obligations monitored as the business grows.
Software does not solve compliance.
Tax software can calculate a rate. It does not register a new state, respond when a notice arrives, clean up historical exposure, or keep pace when your nexus changes. Compliance is an ongoing operation, not a one-time calculation.
Know where you have nexus before choosing the calculation setup.
Register correctly when a new state obligation begins.
File returns, remit tax, and manage deadlines continuously.
Resolve notices and historical exposure with human follow-through.
Self-service software
Calculates rates and stores transaction data
Still requires your team to operate the system
Leaves registrations and notices with internal staff
Does not resolve past exposure on its own
Keeps compliance ownership inside the business
IST managed compliance
Maps nexus obligations before registration decisions
Manages registrations, filings, and remittance workflows
Reviews and resolves state notices
Builds a path for exposure remediation
Combines specialist judgment with automation
Managed compliance services
Everything your internal team should not have to manage.
IST gives growing businesses one accountable partner for the ongoing work that sits beyond tax calculation software.
Nexus analysis
Identify where economic or physical activity creates a filing obligation before it becomes a notice.
Find obligations →
Registrations
Complete state registrations and permit setup when your business needs to begin collecting tax.
Register correctly →
Filing & remittance
Prepare recurring returns, manage filing calendars, and support remittance across jurisdictions.
Manage filings →
Notice management
Review state notices, prepare responses, and track each issue until it is resolved.
Resolve notices →
Exposure remediation
Quantify historical risk and build a practical path through registration, disclosure, or cleanup.
Address exposure →
AutoFill document processing
Extract tax-relevant data from invoices, orders, exemption records, and transaction documents.
Reduce manual entry →
Free Nexus Checker
Check your nexus risk in minutes.
Tell us where you sell, how your business operates, and where revenue is growing. IST will flag states where an obligation may already exist and where growth may create one next.
State-by-state nexus risk summary
Potential registration and filing gaps highlighted
Revenue, transaction, location, warehouse, and marketplace factors considered
High-risk results routed to a compliance review
Follow-up from a specialist, not only an automated score
Step 01
Tell us where you sell
Answer a short set of questions about states, revenue, locations, channels, and transaction volume.
Step 02
Enter your business email
Use a work email so IST can send the result and connect it to the right business context.
Step 03
Receive a risk summary
See where your current activity may create low, medium, or high nexus risk.
Step 04
Review the next step
Discuss registrations, exposure, or managed compliance when the result shows meaningful risk.
Exposure remediation
Unfiled history does not have to become a larger liability.
When a business has been operating in a state without registering or filing, exposure can compound every quarter. IST helps quantify the risk, choose a remediation path, and establish a compliant process going forward.
Phase 01
Exposure review
Review sales history, physical presence, channels, exemption records, and periods of possible non-compliance.
Phase 02
State-by-state risk map
Prioritize states by potential liability, filing urgency, lookback period, and remediation complexity.
Phase 03
Resolution strategy
Evaluate registration, voluntary disclosure, documentation, penalty relief, or another appropriate cleanup path.
Phase 04
Ongoing compliance
Move registrations, filings, notices, and nexus monitoring into a managed process after cleanup.
AutoFill + connected workflows
Clean compliance starts with accurate data.
IST combines managed compliance with document processing and connected workflows so the information used for review, filing, and remediation does not depend on repetitive manual entry.
IST AutoFill
AutoFill reads invoices, purchase orders, exemption documents, and transaction records, then structures the tax-relevant information for human review and downstream compliance work.
Ship-to and bill-to details
Product and service information
Exemption and resale data
Invoice and order records
Transaction files
Human-reviewed outputs
Salesforce and API-connected compliance
Connect IST workflows to Salesforce, ERP, ecommerce, accounting, and custom systems while keeping registrations, filings, notices, and exceptions under specialist oversight.
Salesforce-connected managed compliance, not another tax calculation connector your team has to operate alone.
Salesforce-ready workflows
API tax calculation
ERP and accounting data
Managed follow-through
Managed service packages
Clear options for different levels of sales tax complexity.
Pricing depends on state count, filing frequency, transaction complexity, data readiness, and the level of specialist support required. These ranges provide a practical starting point.
Compliance Starter
For businesses entering multi-state compliance and needing a structured foundation.
$750–$1,500
per month
Initial nexus review
Registration support
Filing calendar setup
Basic managed filing support
Growth Compliance
For mid-market companies that need recurring filings, nexus monitoring, and notice support.
$2,000–$5,000
per month
Multi-state nexus monitoring
Managed filings and remittance
Notice management
Quarterly compliance review
AutoFill option
Enterprise Managed
For multi-entity or system-connected businesses with complex state and data requirements.
$8,000+
per month, custom scope
Multi-entity support
Salesforce and API workflows
Custom filing processes
Advanced notice support
Strategic advisory
Exposure Remediation
A one-time project for businesses that may be late, under-registered, or historically exposed.
$2,500–$15,000+
one-time project
Historical exposure review
State risk map
Resolution strategy
Registration or disclosure path
Managed compliance handoff
Help clients solve sales tax risk without becoming their tax department.
The IST Referral Partner Program gives trusted advisors a clear path for clients who need nexus analysis, registrations, filings, exposure remediation, or ongoing managed compliance.
Built for the professionals who see compliance problems first.
Refer clients confidently while IST handles the sales tax work, communication, and follow-through.
Accountants
Bookkeepers
Fractional CFOs
Salesforce consultants
ERP implementers
Ecommerce agencies
Who IST is built for
Mid-market companies with enterprise-level compliance problems.
IST is designed for growing businesses selling into multiple states without a dedicated in-house sales tax department. Complexity usually comes from new states, channels, products, warehouses, exemptions, and system data.
Ecommerce
Marketplace sellers, DTC brands, remote sellers, and companies expanding across state lines.
SaaS & software
Digital products and subscriptions with taxability rules that vary from state to state.
Manufacturers & distributors
Warehouses, resale certificates, exempt customers, drop shipping, and multi-state inventory.
Freight & logistics
Document-heavy operations with customer, route, invoice, location, and service-type tax data.
Managed compliance starts with clarity
Stop managing sales tax internally.
Let IST identify nexus risk, resolve past exposure, manage recurring compliance, and keep state notices from becoming another internal project.