Two real engagements, and what they changed.

Anonymised examples of migrations and system setups. No client names, and nothing here that the client has not confirmed.

One central login, and access that stopped being a bottleneck

Real estate development

QuickBooks Desktop · QuickBooks Online

Before: access requests and questions had to work around a QuickBooks Desktop file that sat in one place. After: the same requests go through one central login to QuickBooks Online.

Problem

The books lived in QuickBooks Desktop, so giving someone access, or answering a quick question about a transaction, meant working around a file that sat in one place.

What I did

I reviewed and migrated the company file into QuickBooks Online, validating the balances against the original Desktop file before handover.

Outcome

Everything now sits behind one central login. Sharing access, or answering a question about a transaction, is no longer the obstacle it was on Desktop.

Services

QuickBooks data migration

Bills paid from one place, and Shopify posting itself

Online retail

QuickBooks Desktop · QuickBooks Online · Bill.com · Shopify

Before: getting Shopify sales into QuickBooks Desktop and paying bills were both hands-on jobs. After: Shopify posts to QuickBooks Online daily, and bills are paid from Bill.com, by check or electronically.

Problem

Moving off QuickBooks Desktop was the trigger. Paying bills and getting Shopify sales into the books were both hands-on jobs.

What I did

I migrated the company file to QuickBooks Online, set up Bill.com to handle bill payment by check and electronically, and connected Shopify so its activity posts on its own.

Outcome

Bills are now paid from one place, by check or electronically. Shopify activity posts to the books daily without anyone keying it in.

Services

Ten Rivers Systems handles technical setup, configuration, and data migration only and does not provide accounting or tax advice. I am not an accountant or tax adviser. How you keep your books and what you owe stays between you and your own professionals.

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For a limited time, a new project that agrees to a case study takes up to 50% off. The write-up is anonymised like the cases above, unless the project is a website, where the site itself is the case.

What it covers, and what comes off the price, is settled on the call and written into the scope. This offer can close any day, without notice.

Ask about it

Before I change anything, you get a written first pass.

This is a real one, redacted. It costs nothing, and it is yours whether or not you hire me.

See a redacted first-pass review (PDF)

Ten Rivers SystemsAvalara Platform AssessmentPrepared for [Redacted Client] · 8/20/2026Overall system health: FairWhat I found

Returns: New JerseyNeeds attentionCollecting but not filing in New Jersey.
Transaction usageReview recommended9,000 of 10,000 (200/365 days); projected to exceed 15,000.
Product tax codesReview recommendedGeneric code P0000000 in use.
IntegrationsHealthyShopify (B2C) and QBO (B2B) integrated and operating.

Part of page one of the redacted review, set in this site's type.

Something here sound familiar?

Describe what you're running and what isn't working. A rough description is fine; I'll ask for anything else I need.

ryan@tenriverssystems.com

Or start your first pass on a call. Book thirty minutes

I use what you send only to reply, to do any work you ask for, and to keep ordinary business records. How I handle it

A free thirty-minute call.A first-pass review and written scope within two days of the call, at no cost.If it isn't something I do, I'll say so.