Sales Tax Preparation Services in Herndon, VA

Simplifying Sales Tax for E-commerce and Remote Sellers

At Datastub, we specialize in managing complex sales tax obligations for e-commerce businesses, whether you're in retail or wholesale. We understand how daunting it can be to stay compliant with sales tax laws that vary from state to state—especially for remote sellers. That’s why we offer a comprehensive suite of sales tax services designed to take the burden off your shoulders, so you can focus on growing your business.

Sales Tax Compliance Management

Understanding Nexus and Registration

The concept of “nexus” determines where your business has a tax obligation.

Economic Nexus

Econominc nexus is triggered when sales or number of transaction thresholds are met in a respective state. For instance, California requires registration if sales exceed $500,000 in Preceding or current calendar year, while illinois sets the threshold at $100,000 or 200 or more number of transactions in preceding 12-month period.

Physical Presence Nexus

Physical presence can be established by having a physical presence, such as an office, warehouse, or even inventory stored in a state. Physical presence nexus can also be established if you have an employee or sales representative in a state.

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Datastub Approach

Conduct Comprehensive Nexus Studies

At Datastub, we analyze your business activities to determine in which state you have tax obligations based on physical presence nexus or economic nexus.

Handle State Registrations

At Datastub we help businesses to manage their entire sales tax registration process across multiple states, ensuring timely and accurate submissions.

Maintain Compliance

At Datastub we keep track of changing laws and thresholds to ensure ongoing compliance.

Economic Nexus Analysis

Monitoring Sales Across States

For remote sellers, staying on top of each state’s economic nexus rules is crucial. Economic nexus generally requires out-of-state sellers to register and collect and remit sales tax once they meet a set level of sales or number of transactions within a state. These thresholds are based on either the total sales volume or number of transactions in each state, and once crossed, require a business to register and collect sales tax.

South Dakota

$100,000 in sales or 200 transactions

New York

$500,000 in sales and 100 ransactions.

Our Services

Real-Time Sales Monitoring

We continuously monitor your sales data on a monthly, quarterly, and annual basis to track your progress against each state’s economic nexus thresholds. This ensures you're always aware of where you stand.

Proactive Alerts

When your sales approach or exceed a state’s threshold, we promptly notify you with clear guidance on your new tax obligations so you can act before it becomes a compliance issue.

Strategic Planning

We provide actionable insights to help you stay ahead of evolving sales tax obligations. Through proactive monitoring and tailored compliance strategies, we minimize your risk of non-compliance and reduce the chances of costly state audits.

Exemption Certificate Management

Handling Tax-Exempt Certificate

If your business deals with resellers, non-profits, or tax-exempt entities, managing exemption certificates properly is essential. Failure to maintain valid exemption documents can result in assessments during audits.

Our Solution

Certificate Collection and Validation

At Datastub we Ensure that all exemption certificates are properly collected, thoroughly reviewed for accuracy, and kept up to date. So, your business stays compliant and audit ready.

Secure Storage

At Datastub, we make sure that all exemption certificates are stored and maintained properly through a centralized repository for easy access and audit readiness.

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Renewal Tracking

We always keep monitoring the expiration dates of the exemption certificate, handle outreach with your customers or clients for the updated certificate. So, you as a business don’t have to worry about the exemption certificate compliance and you can focus on growing your business.

Accurate Sales Tax Calculation

Ensuring Correct Tax Rates

Accurate sales tax calculation isn’t as simple as applying a flat rate. Sales tax rates can vary not just by state, but by city and county as well. Additionally, product taxability can differ; for instance, clothing may be tax-exempt in some states but taxable in others.

Our Approach

Integrate with Sales Platforms

We assist in seamlessly integrating sales tax rate APIs such as TaxJar, Avalara, or others into your sales platforms like Shopify, Amazon, WooCommerce, and more. This automation ensures your tax calculations stay accurate and up to date across all channels.

Product-Specific Tax Rule Setup

Sales tax rules can vary by product and by state. For example, in New York, clothing items under $175 are tax-exempt. We help businesses to configure product specific tax rules for such scenarios, ensuring your business remains compliant while avoiding over or under collecting tax from your customers.

Handling Complex Tax Scenarios

We help businesses to manage complex tax calculations for bundled products, discounts, promotions, partial tax, product specific tax etc. so you collect accurate tax and be compliant with sales tax rules.

Multi-Channel Sales Tax Management

Consolidating Data Across Platforms

If you are selling on multiple platforms like Amazon, eBay, facebook, Instagram, walmart and your own website can complicate the sales tax compliance when it comes to reporting accurate sales and sales tax amount while filing the sales tax return.

Our Solution

Aggregates Sales Data

We Collect and consolidate sales from all your sales channels and make sure that that every transaction is accurately captured and reconciled.

Data Consistency & Accuracy

By using a Standardize template to process your sales data to prevent errors and omissions and make sure the number are accurate.

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Streamlines Reporting

We provide a detailed report of Sales, Sales tax collected including all channel sales with reconciled giving you a comprehensive, reconciled view of your business activity in one place.

Sales Tax Filing

Accurate Returns, Filed on Time - Every Time

Filing sales tax returns can be a time-consuming and high-risk process, especially when you’re registered in multiple states. Each state has its own filing frequency (monthly, quarterly, or annually), unique return formats, and strict deadlines. A missed deadline or an incorrect filing can lead to interest charges, penalties, or even audit triggers.

At Datastub, we take that stress off your plate with a fully managed filing process designed for accuracy, timeliness, and peace of mind.

Our Services

Return Preparation & Filing

We prepare and file your sales tax returns accurately across all applicable states and local jurisdictions. We ensure returns reflect your reconciled sales data, sales tax collected, and any exemptions applied. so you’re always reporting exactly what’s required.

Filing Frequency Management

Every state has different filing frequency like monthly, quarterly or annually. We keep track of every state's filing schedule for your business and ensure each return is submitted on time - no missed deadlines, no late fees.

Payment Management

Once your return is prepared, we also manage the payment process. We ensure timely and accurate remittance to each tax authority.

Audit Support

We maintain detailed records of your filings, transaction summaries, and payment confirmations for every state. If your business is ever audited, you’ll have complete, well-organized documentation to back up every filing.

Sales Tax Reconciliation

Aligning What You Collected with What You Filed

Sales tax reconciliation is a critical step in compliance process, yet it’s often overlooked. Reconciling the sales tax means what you’ve collected across various platforms of your sales channels with what you’ve reported and paid to each state helps ensure financial accuracy, avoid over or underpayments.

At Datastub, we thoroughly reconciling your sales tax data at every filing frequency for each state and make sure you got the timely filing discounts from state and all payments has been applied to sales tax return on the state portal.

Our Services

Matching Transaction

We thoroughly review & reconcile actual sales and sales tax collected pulled from all sales channels (e.g., Shopify, Amazon, Walmart etc) with the figures reported in your sales tax returns and with bank statement.

Return & Refund Adjustments

We make sure that all the customer returns have been properly recorded, and sales tax amount has been correctly adjusted.

Documentation & Audit Readiness

Our reconciliation process is fully documented and saved in a secure, centralized cloud drive, making it easy to access historical data for audits, financial reporting, or internal reviews.

Audit Support

Be Prepared When the State Comes Knocking

Sales tax audits are becoming increasingly common, especially for e-commerce businesses selling across state lines. States are aggressively pursuing unpaid tax revenue, and remote sellers are often a key target. A minor oversight or missing documentation can quickly escalate into a major issue.

How Datastub Supports You During an Audit

Pre-Audit Check

We help ensure your sales tax records are always audit- ready—organized, reconciled, and complete.

Responding to Auditor Requests

We manage communications with auditors, respond to document requests, and ensure that filings, certificates, and sales data are presented clearly and accurately.

Discrepancy Resolution

If discrepancies are found during an audit, we work to resolve them swiftly and advocate on your behalf to reduce exposure or penalties.

Post-Audit Action Plan

We review audit findings, help implement corrective actions and adjust your compliance processes to prevent future issues.

Why Businesses Trust Datastub

Let Datastub be your partner in sales tax compliance.

Benefits

A: Leverage agile frameworks to provide a robust synopsis for high level overviews. Iterative approaches to corporate strategy foster collaborative thinking to further the overall value proposition. Organically grow the holistic world view of disruptive innovation via workplace diversity and empowerment.
A: Leverage agile frameworks to provide a robust synopsis for high level overviews. Iterative approaches to corporate strategy foster collaborative thinking to further the overall value proposition. Organically grow the holistic world view of disruptive innovation via workplace diversity and empowerment.
A: Leverage agile frameworks to provide a robust synopsis for high level overviews. Iterative approaches to corporate strategy foster collaborative thinking to further the overall value proposition. Organically grow the holistic world view of disruptive innovation via workplace diversity and empowerment.
A: Leverage agile frameworks to provide a robust synopsis for high level overviews. Iterative approaches to corporate strategy foster collaborative thinking to further the overall value proposition. Organically grow the holistic world view of disruptive innovation via workplace diversity and empowerment.