Sidr Tax
Sidr Tax is a US sales tax compliance SaaS for e-commerce merchants providing automated nexus monitoring, registration, filing, and remittance across all 50 US states, distributed primarily through the Shopify App Store with a freemium-plus-per-filing pricing model.
- Company typePrivate
- Founded2023
- HeadquartersDover, United States
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What Sidr Tax does
Sidr Tax is a US sales tax compliance Software-as-a-Service platform purpose-built for e-commerce merchants, offering a fully managed end-to-end workflow covering economic and physical nexus monitoring, multi-state sales tax registration, automated filing, and tax remittance across all 50 US states plus the District of Columbia. The company is operated by BYOGCC, Inc., a privately held Delaware corporation headquartered in Dover, Delaware (founded 2023, 1-10 employees). Its primary distribution channel is the Shopify App Store, where it is listed as a native integration; once installed, the platform performs automated daily transaction synchronization (including up to one year of historical backfill) and applies rooftop-accurate jurisdiction-level tax calculations using product taxability rules. A native Shopify integration handles the data ingestion layer, while side integrations with Amazon Marketplace (via CSV export) and Stripe (billing) round out the operational surface.
The platform's technology base is a cloud-native SaaS architecture hosted on Amazon Web Services, with data encrypted at rest and in transit, a managed compliance workflow engine spanning the full sales-tax lifecycle, and human-inspected filings layered onto each automated submission. Revenue is generated through a three-tier subscription model (Free, Standard at $60/filing plus $150/registration, Premium with custom pricing for mid-market and enterprise merchants), with per-filing and per-registration fees billed directly via Stripe rather than through Shopify billing (a structural shift completed in 2025). Distribution is anchored in the Shopify ecosystem with a freemium self-serve onboarding flow, an extensive help-center content library, and a white-glove support overlay (under-one-hour response) that differentiates against automated-only incumbents such as Avalara and Taxually. The customer base is composed of small and mid-sized e-commerce merchants on Shopify, including displaced Avalara and Taxually customers, with named references Malie Organics, Zellie's, Bartact, Echo Water, and Rooted Network.
Sidr Tax firmographics
Firmographics- Name
- Sidr Tax
- Legal name
- BYOGCC, Inc.
- Website
- https://sidr.io
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Sidr Tax is a US sales tax compliance SaaS for e-commerce merchants providing automated nexus monitoring, registration, filing, and remittance across all 50 US states, distributed primarily through the Shopify App Store with a freemium-plus-per-filing pricing model.
- Ownership category
- akta.pro rank
Sidr Tax industry classification
Industry- Product category
- Sales Tax Compliance Software
- NAICS
- Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412)
- SIC
- Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- Excise, VAT/Sales Tax & Indirect Tax Administration (BPAIADAH)
Keywords
Where Sidr Tax is headquartered
LocationHeadquarters
- HQ city
- Dover
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Sidr Tax business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Subscription Plans (Platform Fee): Monthly subscription plans (Free, Standard, Premium) providing access to the platform's compliance tools, nexus monitoring, reporting, and support. Free tier is reporting-only with no autofile or registration. Standard and Premium tiers unlock core compliance automation.
- Per-Filing Fees: Charged at $60 per filing on the Standard plan for each state tax filing and remittance processed through the Autofile service. Filing fees are billed and charged directly by Sidr Tax (not via Shopify) on the new plan structure.
- Registration Fees: One-time fee of $150 per registration for each US state sales tax license application submitted on behalf of the merchant. Covers the preparation and submission of the permit application.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free - Nexus monitoring and reporting for small merchants with no nexus states |
| Subscription | Monthly | Standard - Core automated compliance (filing + registration) for merchants with 1+ nexus states |
| Subscription | Monthly | Premium - Enhanced autopilot with dedicated account management for large merchants |
| Subscription | Monthly | Custom - Tailored plan for enterprise or unique business requirements |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels8 records
Sidr Tax product offering
Product offeringCore offering
Sidr Tax is a fully managed US sales tax compliance platform for e-commerce merchants. It delivers an end-to-end workflow covering nexus monitoring, state sales tax registration, tax calculation, automated filing and remittance to state Departments of Revenue, and reporting across all 50 US states and DC. The product is distributed primarily as a Shopify App Store integration, with a managed compliance service layer that prepares and submits permit applications and filings on the merchant's behalf.
Product overview
Sidr Tax is a fully managed US sales tax compliance platform for e-commerce businesses. It operates as a unified product that spans the entire sales tax lifecycle — from nexus monitoring and state registration through tax reporting, automated filing, and remittance — for all US states. The core platform is delivered through three subscription tiers (Free, Standard, and Premium) that build on each other: the Free plan provides nexus tracking and reporting for pre-nexus businesses; the Standard plan adds automated filing and state registration services ($60/filing, $150/registration); and the Premium plan adds dedicated account management, advanced API access, and error insurance for high-volume merchants. Sidr Tax integrates natively with Shopify (its primary e-commerce platform), supports Amazon Marketplace sales tax data via CSV export, offers CSV import for other transaction sources, and uses Stripe for subscription billing.
Differentiator
Problem solved
Functional benefit
Products and services
- Nexus Monitoring Tracks physical and economic nexus status across all US states, showing which states are approaching or have reached nexus thresholds. Provides a visual Economic Nexus Dashboard that aggregates historical sales volume against each state's qualification rules ($100,000 sales or 200 transactions).
- State Sales Tax Registration Managed service that completes sales tax permit applications on behalf of the merchant for all US states. After submission, merchants are guided through setting up access to their new state sales tax accounts. Supports Streamlined Sales Tax registration where applicable. Charged at $150 per registration.
- Sales Tax Reporting Generates comprehensive sales tax reports broken down by jurisdiction (state, county, city). Reports include gross sales, net sales, taxable sales, tax collected, order counts, and transaction counts. Data reflects Shopify-collected taxes and supports state-specific filing forms. Includes CSV import for non-Shopify transactions.
- Autofile & Remittance Automatically files and remits sales tax to state Department of Revenue websites on behalf of merchants based on their designated filing frequency (monthly, quarterly, semi-annual, or annual). Filing occurs between the 5th-15th of each month. Supports backfiling and amendments. Colorado home rule city filings and Washington State Business and Occupation (B&O) tax returns are included. Charged at $60 per filing on the Standard plan.
- Free Plan Free tier for small e-commerce stores not yet at nexus. Includes nexus monitoring across all states, a free Nexus study, live chat support, address validation, detailed reporting and analytics, CSV transaction imports, historical liabilities analysis, and a comprehensive risk assessment. Does not include automated filing or registration services.
- Standard Plan Most popular plan for medium e-commerce stores with one or more nexus states. Includes everything in Free plus automated filing and remittance, registration and deregistration services ($150 per registration), rooftop-accurate tax calculations, automatic tax code classification, and backfiling and amendments. Charged at $60 per filing.
- Premium Plan High-volume plan for large e-commerce stores, typically with more than 10 nexus states. Includes everything in Standard plus enhanced filing autopilot, advanced API access, dedicated account management, priority access to sales tax experts, volume-based discounts, Voluntary Disclosure Agreements (VDAs), and error insurance coverage. Custom pricing.
Quantifiable outcome
- Average customer support response time <1 hour
- +3 more outcomes
Companies that use Sidr Tax
Customer profileNamed customers5 records
Segments3 records
Ideal customer profiles3 records
Sidr Tax technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
AI capability1 record
Feature9 records
Sidr Tax partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered minor and core.
- StableminorStable provides virtual US mailing addresses for non-US businesses. Sidr Tax refers non-US clients to Stable for setting up a US mailing address to receive state government correspondences more efficiently. Sidr Tax provides a 20% discount referral link (promo code) for clients registering through their partner link, driving mutual customer acquisition.
- StripecoreStripe serves as Sidr Tax's primary payment processing partner for subscription billing. Sidr Tax migrated from Shopify-based billing to Stripe-powered direct billing for Standard and Premium plan subscribers, enabling merchants to pay via connected US bank account (ACH) or credit card. Stripe's infrastructure also supports micro-deposit bank account verification for manual bank account additions.
- Amazon MarketplacecoreAmazon Marketplace integration allows Sidr Tax to handle sales tax for merchants selling on Amazon US. Customers export the Marketplace Tax Collection Report from Amazon Seller Central and provide it to Sidr Tax, which processes the data and automatically exempts Amazon-collected-and-remitted transactions from manual sales tax filings to prevent double payment.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
Sidr Tax competitors and assessment
Company assessmentDirect peers
- Avalara: Market-leading sales tax compliance automation platform. Sidr customers explicitly cite migrating from Avalara due to high cost and poor service, making Avalara Sidr's primary incumbent competitor in the same product category.
- TaxJar: Sales tax automation SaaS historically focused on SMB e-commerce including Shopify merchants. Now part of Stripe, it competes directly with Sidr in the Shopify-native sales tax filing niche.
- TaxCloud: Sales tax compliance platform offering calculation, filing, and remittance services to e-commerce and SMB merchants. Directly overlaps with Sidr's core product scope across all US states.
- Stripe Tax: Stripe's native sales tax and VAT compliance product, integrated into Stripe payments. As Sidr's billing already runs through Stripe, Stripe Tax is both an integration partner and a direct competitive threat to Sidr's Shopify merchant base.
- Taxually: Sales tax compliance provider named explicitly in Sidr's customer testimonials as a former provider with high costs and poor service. Overlaps in SMB/mid-market US sales tax filing and remittance.
- Quaderno: SMB-focused sales tax calculation and filing tool built for e-commerce platforms including Shopify. Comparable value proposition and target customer profile, making it a close competitor in the lower-mid market segment.
Broad incumbents
- Sovos: Larger, established tax compliance provider offering sales tax, VAT, and broader indirect tax automation for mid-market and enterprise. Operates in the same compliance category but with a much wider portfolio than Sidr's Shopify-focused offering.
- Vertex: Long-standing enterprise tax technology provider covering sales tax, VAT, and broader indirect tax. Comparable compliance automation function but skewed toward larger enterprise customers rather than Sidr's Shopify SMB focus.
- Wolters Kluwer (OneSource): Enterprise indirect tax compliance suite from Wolters Kluwer covering sales/use tax, VAT, and broader corporate tax. Distinct from Sidr in scale and customer profile but overlapping in underlying compliance workflow.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat4 records
Key risks7 records
Key highlights7 records
Customer concentration
Sidr Tax social profiles
Digital presenceSidr Tax financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sidr Tax leadership team
Management profileNumber of profiles
Profiles1 record
Sidr Tax funding detail
Funding detailFunding overview
Funding rounds1 record
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sidr Tax M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sidr Tax
What does Sidr Tax do?
Sidr Tax is a fully managed US sales tax compliance platform for e-commerce merchants. It delivers an end-to-end workflow covering nexus monitoring, state sales tax registration, tax calculation, automated filing and remittance to state Departments of Revenue, and reporting across all 50 US states and DC. The product is distributed primarily as a Shopify App Store integration, with a managed compliance service layer that prepares and submits permit applications and filings on the merchant's behalf.
Is Sidr Tax a public or private company?
Sidr Tax is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Sidr Tax founded?
Sidr Tax was founded in 2023. It employs 1 to 10 people.
Where is Sidr Tax based?
Sidr Tax is headquartered in Dover, United States, in the North America region.
How does Sidr Tax make money?
Three revenue lines are on record. Subscription Plans (Platform Fee) is the primary driver. The others are per-Filing Fees and registration Fees.
Who are Sidr Tax's main competitors?
Direct peers on record are Avalara, TaxJar, TaxCloud, Stripe Tax, Taxually and Quaderno. Broad incumbents are Sovos, Vertex and Wolters Kluwer (OneSource).
Does Sidr Tax have an API?
No public API is recorded for Sidr Tax.
What industry is Sidr Tax in?
Sidr Tax's product category is Sales Tax Compliance Software. Its primary akta.pro industry code is BPAIADAH, Excise, VAT/Sales Tax & Indirect Tax Administration. Its NAICS code is 5412 and its SIC code is 7370.