Financial Clarity for Washington Based E-commerce Brands
NexusWorks LLC provides bookkeeping, sales tax compliance, and fractional CFO services built specifically for e-commerce sellers operating out of Washington. We give online brands the financial visibility to reduce tax exposure and make sharper inventory and growth calls, all through one integrated team.
Washington's B&O tax catches sellers who think "no income tax" means no other obligations
Bank deposits from Amazon and Shopify rarely match what was actually earned
Miscalculated COGS makes margins look better on paper than they really are
We also support e-commerce sellers in California, Texas, Florida, New York, and Tennessee.
The Recurring Financial Problems Washington Sellers Face
Most generalist accountants were never built for the pace of e-commerce. The same issues surface constantly among Washington-based sellers:
FBA inventory moves between fulfillment centers without warning, leaving sellers unsure which states they even owe tax in.
Platform settlements from Amazon and Shopify almost never match bank deposits, making monthly books a constant reconciliation project.
Landed cost, prep charges, and FBA fees get left out of COGS, inflating margins that look good until tax time arrives.
Washington layers a Business and Occupation tax on top of sales tax, and most sellers never separate the two in their planning.
Bookkeeping and tax strategy operate as separate functions, so deductions get missed and quarterly estimates are built on incomplete numbers.
Selling across multiple channels with no consolidated view means leadership never really knows what the business made last month.
None of this gets solved by a bookkeeper working alone, or a tax preparer working in isolation. It takes one coordinated system watching everything together.
Why
Washington's Tax Rules
Catch Sellers Off Guard
The Two-Layer Tax System Most Out-of-State Sellers Don't Plan For
Washington's economic nexus threshold for sales tax is $100,000 in annual sales, measured against the current or prior calendar year. Once crossed, registration through the state's My DOR portal is required regardless of whether the seller has any physical presence in Washington at all.
FBA Inventory Creates Physical Nexus the Moment It Arrives
Washington is a major West Coast logistics hub, and Amazon fulfillment centers here mean sellers can trigger physical nexus without ever setting foot in the state. Marketplace facilitators handle tax collection on those orders, but direct sales through a seller's own Shopify store or website remain the seller's full responsibility, separate from whatever Amazon is already collecting.
Combined Sales Tax Rates Climb Past 10% in Seattle
The statewide rate is 6.5%, and local additions push Seattle-area combined rates above 10%, among the highest anywhere in the country. Washington sources tax based on the customer's delivery address, so the applicable rate shifts by ZIP code for sellers shipping across the state.
The Business and Occupation Tax Is a Second, Separate Obligation
This is the detail that trips up sellers who assume Washington's lack of a state income tax means a lighter overall tax burden. The B&O tax is a gross receipts tax, owed on business income regardless of profitability, and it applies alongside sales tax rather than instead of it. For retailers, the rate is a small percentage of gross revenue, but it applies whether or not the business turned a profit that period, which surprises sellers who are only tracking sales tax compliance.
This isn't a tax explainer. These are specific, ongoing risks your financial team should already have covered.
How NexusWorks Supports Washington E-commerce Sellers
Reconciliation Across Every Sales Channel
Each month, we tie every dollar of revenue, every fee, refund, and chargeback from Amazon, Shopify, Etsy, and any other platform back to your actual bank deposits. Reserve holds and delayed payouts make this messy on its own, we clean it up and deliver financials that reflect what you actually kept.
Sales Tax and B&O Registration and Filing
We register with the Washington Department of Revenue, calculate sales tax at the correct destination-based rate for every order, and file B&O returns on schedule alongside your sales tax obligations. Because these are two separate tax systems running in parallel, we track both independently so nothing gets missed.
COGS and Inventory Accounting Built for Your Model
Whether you fulfill through FBA, a third-party logistics partner, or in-house, we structure inventory accounting to match. Freight, duties, and prep costs all roll into landed cost, so your margins are based on what products actually cost to deliver.
Fractional CFO Support as Revenue Scales
Once a brand hits consistent revenue, decisions get more complicated — inventory purchasing, supplier terms, ad spend efficiency, cash flow timing. Our fractional CFO work covers forecasting, inventory financing analysis, channel-level P&L, and investor or lender reporting.
Ready to Get Your E-commerce Finances Under Control?
If your brand has grown past the point where your current financial setup can keep up, that gap is costing you money in missed deductions, incorrect filings, and decisions made on inaccurate numbers. Our team reviews your platform reconciliation, Washington tax exposure, and entity structure and tells you exactly what needs to change.
Why Washington Sellers
Choose NexusWorks
E-commerce is central to our practice, not an occasional client type. We understand how Amazon settlements actually work.
How Shopify payouts diverge from real revenue, and how nexus accumulates across states as a brand grows. Bookkeeping, tax, and CFO functions sit inside a single team.
So your financial picture stays consistent and nothing falls through the crack between accountant and advisor.
Everything is delivered remotely through QuickBooks, Xero, and secure client portals, with pricing that's transparent from the start.
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Or Call Us Today At +1 310-810-1790
Frequently Asked Questions
Amazon's collection is limited to orders made through Amazon itself. Sales through your own Shopify store or website are entirely your responsibility. A CPA also manages your B&O tax exposure, income tax, and profit reporting, none of which Amazon's tax handling ever touches.
Yes. The B&O tax is based on gross receipts, not net income, so it's owed on revenue regardless of profitability. This is one of the most commonly misunderstood parts of doing business in Washington.
The moment Amazon stores your inventory in a Washington fulfillment center, physical nexus exists, independent of your sales volume or where your company is registered. Many sellers carry Washington nexus without ever realizing it.
Bookkeeping is daily transaction recording, platform reconciliation, and expense sorting. Accounting builds on that into financial statements, tax strategy, and profitability analysis. Online sellers need both working in tandem, since platform fees and inventory costs require handling generic bookkeeping typically misses.
Yes, entirely. We connect to your platforms and bank accounts directly through QuickBooks, Xero, and secure portals, deliver monthly reports, and manage every Washington and multi-state filing without requiring an in-person relationship.