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Industry Expertise

E-Commerce Bookkeeping Services for Online Stores

Multi-channel sales reconciliation and inventory cost tracking are eating your time. Twelix fixes your books and keeps them clean so you can focus on scaling your store.

Everything our e-commerce bookkeeping covers

What we handle for you, and the deductions we capture along the way — all built into how we run your books from day one. Nothing you need to bring to a meeting.

01
Multi-channel revenue reconciliation
Shopify, Amazon, Etsy, and every other platform reconciled individually before consolidating into your P&L, so your revenue figures are always channel-accurate.
02
Sales tax nexus tracking
We track nexus thresholds across every state and flag when you cross registration requirements, before it becomes a liability.
03
COGS & inventory accounting
Product-level or category-level cost of goods tracking, set up from day one so you see true margins on every SKU, not blended averages.
04
Marketplace fees, refunds & chargebacks
Fees, refunds, and chargebacks are broken out individually so your gross revenue and net revenue are always distinct and accurate.
05
Payment processor reconciliation
Every Stripe, PayPal, and Square payout reconciled to the transaction level — not just the deposit amount.
06
Monthly P&L, Balance Sheet & Cash Flow
Financials the same day every month — no chasing.
07
Year-end CPA-ready package
Hand your tax prep a clean file instead of a mess.

Deductions we track for you

Shipping & Fulfillment

Postage, packaging materials, 3PL warehouse fees, and shipping insurance.

Software & Subscriptions

Shopify, Amazon Seller fees, email marketing tools, and analytics platforms.

Product Photography

Studio costs, photographer fees, and editing software for product listings.

Home Office

Portion of rent, utilities, and internet if you run your store from home.

Advertising Spend

Facebook Ads, Google Shopping, influencer partnerships, and PPC campaigns.

Returns & Damaged Goods

Write off unsellable returned inventory and damaged products.

Twelix Accounting Demo

Clean books, handled for you
every single month.

Hand off the categorizing, reconciling, and reporting to a dedicated Twelix bookkeeper. You get CPA-ready financials on schedule — and your time back to actually run the business.

Book a Free Consultation

Why Businesses Choose Twelix

We don't just keep your books, we give you the financial clarity to run your business with confidence.

150,000+
Transactions reconciled
11,000+
Hours of bookkeeping
200+
Clients served
99%
5-star reviews
60%
Cost reduction
14+
Industries served
Hear it straight from our clients

E-Commerce Bookkeeping Challenges Which We Take Care of

Multi-Channel Complexity

Shopify, Amazon, Etsy, and eBay each have different payout schedules, fees, and reporting formats.

The cost: revenue gets miscounted and reconciliation eats hours every month.

Sales Tax Nightmare

Multi-state nexus, varying tax rates, and marketplace facilitator laws make compliance overwhelming.

The cost: you over or under collect tax and risk penalties in states you didn't know you owed.

COGS Tracking

Tracking cost of goods sold across product lines and suppliers requires precise inventory accounting.

The cost: your margins look wrong, so you price and reorder on bad numbers.

Payment Processor Reconciliation

Stripe, PayPal, and Shopify Payments each net out fees and refunds differently.

The cost: fees quietly erode profit and payouts never match your bank.

Inventory & Stock Valuation

Stock levels, write-offs, and valuation shift across warehouses and 3PL partners.

The cost: your balance sheet overstates assets and shrinkage slips by unnoticed.

Returns, Refunds & Chargebacks

High return volume brings partial refunds, restocking, and payment disputes.

The cost: refunds and chargebacks distort revenue and slip through uncategorized.

Deferred Revenue

Gift cards, store credit, and subscriptions are collected before they're actually earned.

The cost: revenue is recognized too early, throwing off every monthly report.

Shipping & Fulfillment

Freight, packaging, 3PL fees, and carrier surcharges change with every order.

The cost: these get lumped together, hiding your true profit per order.

Discounts & Promos

Frequent sales, bundles, and coupon codes change what revenue you actually keep.

The cost: gross and net revenue blur together, so margins look better than they are.

Multi-Channel Complexity

Shopify, Amazon, Etsy, and eBay each have different payout schedules, fees, and reporting formats.

The cost: revenue gets miscounted and reconciliation eats hours every month.

Sales Tax Nightmare

Multi-state nexus, varying tax rates, and marketplace facilitator laws make compliance overwhelming.

The cost: you over or under collect tax and risk penalties in states you didn't know you owed.

COGS Tracking

Tracking cost of goods sold across product lines and suppliers requires precise inventory accounting.

The cost: your margins look wrong, so you price and reorder on bad numbers.

Payment Processor Reconciliation

Stripe, PayPal, and Shopify Payments each net out fees and refunds differently.

The cost: fees quietly erode profit and payouts never match your bank.

Inventory & Stock Valuation

Stock levels, write-offs, and valuation shift across warehouses and 3PL partners.

The cost: your balance sheet overstates assets and shrinkage slips by unnoticed.

Returns, Refunds & Chargebacks

High return volume brings partial refunds, restocking, and payment disputes.

The cost: refunds and chargebacks distort revenue and slip through uncategorized.

Deferred Revenue

Gift cards, store credit, and subscriptions are collected before they're actually earned.

The cost: revenue is recognized too early, throwing off every monthly report.

Shipping & Fulfillment

Freight, packaging, 3PL fees, and carrier surcharges change with every order.

The cost: these get lumped together, hiding your true profit per order.

Discounts & Promos

Frequent sales, bundles, and coupon codes change what revenue you actually keep.

The cost: gross and net revenue blur together, so margins look better than they are.

Multi-Channel Complexity

Shopify, Amazon, Etsy, and eBay each have different payout schedules, fees, and reporting formats.

The cost: revenue gets miscounted and reconciliation eats hours every month.

Sales Tax Nightmare

Multi-state nexus, varying tax rates, and marketplace facilitator laws make compliance overwhelming.

The cost: you over or under collect tax and risk penalties in states you didn't know you owed.

COGS Tracking

Tracking cost of goods sold across product lines and suppliers requires precise inventory accounting.

The cost: your margins look wrong, so you price and reorder on bad numbers.

Payment Processor Reconciliation

Stripe, PayPal, and Shopify Payments each net out fees and refunds differently.

The cost: fees quietly erode profit and payouts never match your bank.

Inventory & Stock Valuation

Stock levels, write-offs, and valuation shift across warehouses and 3PL partners.

The cost: your balance sheet overstates assets and shrinkage slips by unnoticed.

Returns, Refunds & Chargebacks

High return volume brings partial refunds, restocking, and payment disputes.

The cost: refunds and chargebacks distort revenue and slip through uncategorized.

Deferred Revenue

Gift cards, store credit, and subscriptions are collected before they're actually earned.

The cost: revenue is recognized too early, throwing off every monthly report.

Shipping & Fulfillment

Freight, packaging, 3PL fees, and carrier surcharges change with every order.

The cost: these get lumped together, hiding your true profit per order.

Discounts & Promos

Frequent sales, bundles, and coupon codes change what revenue you actually keep.

The cost: gross and net revenue blur together, so margins look better than they are.

E-Commerce Bookkeeping FAQ

Yes. We reconcile revenue from Shopify, Amazon, Etsy, eBay, and other platforms into a single, accurate set of books.

We track your sales tax nexus obligations and ensure your books reflect the correct tax liabilities. For filing, we coordinate with your tax advisor.

Returns, refunds, and chargebacks are reconciled monthly so your revenue figures are always accurate.

Yes. We integrate with A2X, Shopify reports, Amazon Settlement reports, and other e-commerce accounting tools.

Absolutely. We set up and maintain cost of goods sold tracking for your entire product catalog.

Still have a question?

Drop us a line and we'll get right back to you.

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Ready to Fix Your E-Commerce Books?