The hidden cost of tax mistakes: We are launching our Tax Truth Advent Calendar

Every week, we speak with founders who feel the same frustration:

“I never know what I can or can’t claim.”
“I feel like I’m overpaying tax, but I don’t know where.”
“I’m scared of getting something wrong and triggering HMRC.”

And the truth is… they’re not wrong to feel that way.

Small tax mistakes - the kind that feel minor - can quietly cost business owners thousands of pounds over the years

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Not because they’re careless or disorganised.
But because nobody ever explained the rules in a way that’s simple, practical, or actually useful.

Most accountants only show up at the end of the year with a bill and a list of what already happened.
By then, it’s too late to change anything.

But business owners don’t need more surprises.
They need clarity.
They need a plan.
They need to know what really matters before HMRC does.

Why tax mistakes cost so much more than people realise

Tax is one of the largest expenses in a business - often bigger than payroll, rent, or marketing.
So even small oversights create a ripple effect:

• You miss out on allowances that were made for you
• You claim less than you’re entitled to
• You structure your salary or dividends the wrong way
• You pay more tax on profit than you needed to
• You leave money on the table, year after year
  
  

And the worst part?
Most of these mistakes are easily avoidable - if you know what to look out for.

But most business owners don’t.

Because they were never taught.

Why we created the Tax Truth Advent Calendar

This December, we wanted to do something different.

Something practical.

Something founders can actually use to improve their tax position before the new year starts.

So we created the GrowFactor Tax Truth Advent Calendar - 24 days of short, clear, founder-friendly insights on the tax mistakes we see every day… and what you actually need to do instead.

We’re not sharing generic advice.

We’re sharing the real issues that cost entrepreneurs money:

• The misunderstandings
• The assumptions
• The “I didn’t realise that mattered” moments
• The timing mistakes
• The claims they forget
• The structures that could’ve been better
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Each day in December, we’re unwrapping one truth - a simple, powerful insight designed to help founders pay less tax and keep more of what they earn.

But we’re releasing them only on social media throughout the month.

Not here.
Not in this blog.
Not all at once.

Why?
Because this is a daily experience - a countdown - and we want you to absorb each lesson one day at a time.

How to follow the Advent Calendar

You can find every tax truth here, updated daily:

👉 LinkedIn: GrowFactor
👉 Instagram: @_growfactor_

Turn on notifications if you don’t want to miss one.
Your January self will thank you.

The bottom line

Most of the tax pain business owners feel isn’t caused by HMRC

It’s caused by silence, confusion, and not knowing what you’re allowed to do.

This December, our goal is simple:

To give founders clarity.
To make tax feel less intimidating.
And to help you keep more of what you work so hard for.

Follow along, learn with us, and start 2026 one step ahead.

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