Summer Associates Tax Services · Stamford, CT · Serving clients for over 35 yearsCall (203) 327-4311
CT E-commerce TaxE-commerce seller tax · by Summer Associates
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The e-commerce seller tax strategy library

Sellers face two tax systems at once: income tax on profit and sales tax on every order in dozens of states.

Best forEvery marketplace and payment-processor sellerPrimary leverAccurate reporting
Reporting

Reconcile Form 1099-K to your books

Federal 1099-Ks are required above $20,000 and 200 transactions, but some states require them at $600. The IRS matches the form to your return, so tie it out to your books.

Best forSellers with $100k+ in any state or inventory in 3PL warehousesPrimary leverRisk reduction
Sales tax

Map your sales tax nexus

Marketplace facilitators collect on their platforms, but your Shopify site and wholesale sales are your responsibility. A nexus study shows where you must register.

Best forSellers with average gross receipts of $32M or lessPrimary leverTiming & simplicity
Accounting

Choose the right inventory method

The choice affects when you deduct product costs. A switch generally requires Form 3115 with a §481(a) adjustment.

Best forProfitable sellers netting $80k+ with no employees other than a spousePrimary leverPayroll tax & deduction
Entity

S corp plus Solo 401(k)

Pay yourself a reasonable salary, defer $24,500, have the S corp contribute 25% of salary, and keep distributions free of payroll tax.

Best forSellers above the QBI income thresholdPrimary lever20% deduction
Deduction

Protect the 20% QBI deduction

Owner salary, employee wages, and owned property all affect the wage-and-property limit, so they should be modeled together.

Best forSellers shipping abroad or using overseas marketplacesPrimary leverCompliance
Global

Plan for international sales and suppliers

Selling into the EU or UK can require VAT registration on the first sale. Duties and landed costs generally belong in inventory cost, not expenses.

Best forSellers based in Connecticut or shipping into itPrimary leverCompliance & SALT cap
Connecticut

Get Connecticut sales tax and the PET right

Remote sellers must register once they have both $100,000 of gross receipts and 200 sales into Connecticut. Sellers based in the state need a $100 permit before their first sale. S corps and partnerships can elect the PET each year on a timely filed return, and owners get a refundable credit for 87.5% of it.

Find out where you owe sales tax and what you could keep.

In a consultation, we look at your sales by state, Forms 1099-K, and last return, estimate whether an S corp and Solo 401(k) could lower your tax, and tell you where you may need to register.

Book a free consultation or call (203) 327-4311 The first consultation is free, with no obligation.
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