Insights

Practical Guides on US Tax, Bookkeeping & Cross-Border Planning

Straightforward, plain-English guidance from the Meridian team — the topics our US and non-resident clients actually ask about, published as we write them.

First to publish

What we're writing next

We publish one practical guide every one to two weeks. These are the launch topics in the pipeline — bookmark the page or get in touch and we'll make sure the one you need reaches you first.

01Entity Formation

LLC or S-Corp? What Actually Changes at Tax Time

Self-employment tax, reasonable salary rules, and the break-even profit point where an S-corp election starts saving real money.

02Non-Resident

The Non-Resident's Guide to Getting a US EIN

The exact IRS process for founders without an SSN or ITIN — including realistic timelines and the most common rejection reasons.

03Sales Tax

Sales Tax Nexus in 2026: Do You Owe Tax in a State You've Never Visited?

Economic nexus thresholds by state and a simple self-check for e-commerce sellers.

04Tax Returns

1040 vs. 1040-NR: Which Return Do You Actually File?

The substantial presence test explained without the jargon.

05Cross-Border

What the IRS Actually Looks at When You Form a Single-Member LLC Abroad

EIN, Form 5472, and the reporting non-resident owners routinely miss.

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US resource centre

Practical guidance, without the jargon

We publish one practical guide every one to two weeks — covering the questions US and non-resident clients actually ask.

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Whatever your tax, accounting or advisory question — let's talk.

Tell us about your business and we'll show you how Meridian can move it forward — in the US, the UK, or across borders.

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