Startup accounting, from first invoice to first raise

Your books, accounts and corporation tax, run by a qualified UK accountant. From £75* a month.

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Why UK startups choose Sleek

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One fixed cost in your projections

Monthly, not hourly. Your accounting line never moves because the month got busy.

Every number ready for an investor’s question

Bank line to filed return, documented as we go. Nothing to rebuild when you raise.

AI for speed, accountants for judgement

Software codes the volume. A qualified accountant signs off every filing.

Payroll, VAT and R&D without changing firm

First hire, VAT threshold, first claim. Same team, same rate card.

Accounting plans for UK startups

Switch to Sleek and ‎‎ save 20% on annual accounting, with reliable support and full compliance.

Recommended

Starter

Compliance off your plate

£900

/yr*

£75/mo

with monthly

Turnover up to £90,000/yr

Save 15%

Recommended

Scale

No quarterly guesswork

£130

/mo*

£1,560/yr

with monthly

Turnover up to £90,000/yr

Save 15%

10% OFF

Most Chosen

Recommended

Pro

Built for active trading

£2,160

£200

/mo*

£2,400/yr

with monthly

Turnover up to £200,000/yr

Save 15%

15% OFF

Recommended

Enterprise

Advice when decisions matter

£300

£399

/mo*

£4,788/yr

with monthly

Turnover up to £500,000/yr

Save 15%

10% OFF

*Prices shown are exclusive of VAT

Compare plan details

Show key differences only

Feature

Starter

Scale

Pro

From

£900

£720

Covers all essentials:

20% OFF

Accounting Pro (includes VAT filing & Payroll)

Perfect for businesses focused on growth, requiring monthly bookkeeping, payroll, and tax compliance.

From

£1,248

£960

Full service accounting:

Monthly Bookkeeping
Year-end accounts & Tax Return
Dedicated Accountant
Confirmation Statement
Xero Subscription
Director's Tax Return
VAT filing
Payroll & Pension filing 1-5 employees

20% OFF

Compare plans Compare plans

Accounting Basic

From £50/mo*

Accounting Pro
(includes VAT filing & Payroll)

From £100/mo*

Bookkeeping

Annual

Monthly

Xero Subscription

Confirmation Statement

Year-end accounts & Tax Return

Dedicated Accountant

Director’s Tax Return

£250/financial year

VAT filing

Payroll & Pension filing 1-5 employees

Multi-currency support

£10/month

backdated bookkeeping

£750/fy (up to 100 transactions)

*For financial years ending in under 3 months, a minimum 3-month purchase of the monthly accounting plan is required.

Not sure which plan is right for your business?

A startup accountant vs doing it yourself

On your own (even with AI tools)

Easy to work from last year’s rates by mistake
General answers, not your company
You have to remember every one
You handle the letters and enquiries
No one to ask when it matters
It’s all on you

With Sleek accounting

Checked against current rules, by a person
Advice from your actual books and history
Your accountant flags them first
Your accountant deals with HMRC
Same day, no extra bill
A qualified accountant signs every filing

How do you move your startup to Sleek?

Tell us where your startup is now

Day 1

You

One call, about 15 minutes

Sleek

A fixed quote, not a range

We handle the switch, or the setup

Week 1

You

Sign one HMRC authorisation

Sleek

Clearance from your old accountant, or setup from scratch

Your books stay current

Weeks 2 to 4

You

Connect your bank once

Sleek

Records migrated, your accountant reviews everything that moves over

Your next deadline is already covered

Ongoing

You

Nothing. Get on with growing

Sleek

Deadlines tracked, filings prepared before they're due

Ready to move your startup to Sleek?

Meet the accountants helping UK startups grow

Toby Denwood (ATT)

Tax Manager

Toby heads our UK tax team, advising owner-managed businesses on Corporation Tax, personal tax and compliance obligations.

Chloe Waite (MAAT, ACCA)

Accounts Manager

Chloe supports a wide range of Sleek clients with year-end accounts, VAT returns and Self Assessment.

Holly Chapman (MAAT)

Senior Accountant

Holly specialises in year-end accounts and management reporting for UK businesses.

Noorahmad Khan (ACCA)

Account Manager

Noorahmad is an ACCA-qualified accounts manager with over a decade of experience, specialising in year-end accounts and financial reporting.

Nuzhat Haider (ACCA)

Senior Accounting Manager

Nuzhat supports SMEs and e-commerce businesses with statutory accounts, Corporation Tax and VAT compliance.

One team for your whole finance function

Most startups end up with a bookkeeper in one place, an accountant in another and a separate payroll tool. With Sleek it’s one team, one login and one monthly fee, covering everything here.

Helpful guides for startup founders

How much does it cost to run a limited company?

The real yearly cost of a UK limited company, from filing fees to accounting, so you can budget your runway.

SEIS vs EIS: which is right for your raise?

How the two schemes compare, what investors expect, and when to get advance assurance before you raise.

How to change accountants without the hassle

The clearance, records and HMRC steps involved in moving accountant, and how to keep your filings continuous.

Accountants for startups, your questions

How much does a startup accountant cost?

Sleek’s Starter plan is £900 a year. Across the UK market, limited company accounting typically runs from £60 to £350 a month. Your price depends on transaction volume, VAT status and payroll rather than your funding stage, and you get a fixed quote before you commit. For the wider picture, see what it costs to run a limited company.

Is Sleek suitable if we’re pre-revenue?

Yes. Many of our startup clients join before their first invoice. A company with no trading activity still owes Companies House a confirmation statement and annual accounts, and HMRC needs to know your status. Starting early also means your R&D and investment records are clean from day one rather than reconstructed later.

Do I get a dedicated accountant?

Yes, a named ACCA or MAAT qualified accountant who handles your file every month, not a shared chat queue. They reply the same working day, so a question about a hire or a contract doesn’t sit for a week.

Do you handle R&D, SEIS and EIS claims?

Yes. Our tax team prepares R&D claims alongside your year-end accounts and handles SEIS and EIS advance assurance, so investors have what they need before they commit. Both are priced separately from your accounting plan. Getting the paperwork right at the point of investment matters far more than fixing it afterwards.

Will I get management accounts for my board and investors?

Yes. The Enterprise plan includes quarterly management accounts and an advisory call. On other plans you can add a monthly review with your accountant. Books kept current through the year also make due diligence much easier when you raise.

Can we switch to Sleek mid-year?

Yes, at any point. We request professional clearance from your current accountant, move your records across and update your HMRC authorisation. Your filing history stays continuous, and we check what’s due next so nothing slips during the handover. Our guide to changing accountants covers each step.

When should a startup hire an accountant?

Most founders benefit from one at incorporation, before the first payroll run or the first raise. The expensive mistakes are structural, like share allocations, director’s loans and missed R&D windows, and they’re much cheaper to prevent than to correct. Comparing schemes? See SEIS vs EIS.

Need more information?

Browse our articles for in-depth guides, expert tips, and the latest updates on UK business essentials.

Carles M,
Sleek Advisor

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