Harnett Accontants

Harnett & Co | Chartered Accountants, Kingston upon Thames
Global House Business Centre 1 Ashley Avenue Epsom Surrey KT18 5AD
ICAEW Authorised Practice
Bookkeeping & VAT Returns | Harnett & Co — Chartered Accountants Kingston upon Thames Skip to main content
Business Services

Bookkeeping & VAT Returns
done properly

Accurate, MTD-compliant bookkeeping and VAT returns for growing businesses across West London and Surrey. We keep your records clean, your VAT submissions on time and your mind free to focus on running your business.

📞 01372253100
MTD Compliant
Monthly & Quarterly Options
All VAT Schemes Covered
Cloud Accounting
ICAEW Regulated
Why it matters

The foundation of every well-run business

Good bookkeeping is not simply about keeping HMRC happy — it gives you an accurate, real-time picture of where your money is coming from, where it is going and what your business is genuinely worth at any point in time. Without clean books, every business decision you make is based on incomplete information.

VAT is one of the most technically demanding obligations facing UK businesses. The rules around what can and cannot be reclaimed, which scheme is most tax-efficient for your turnover level and sector, and how to handle exceptions — such as partial exemption, the construction industry reverse charge or overseas supplies — are complex and regularly updated by HMRC.

At Harnett & Co we handle your bookkeeping and VAT as an integrated service — so your records are always in the right shape for your quarterly VAT return, your year-end accounts and your own management decisions.

Deadline protection — all VAT filing deadlines tracked and submitted automatically via MTD-compatible software
Input tax maximised — we ensure every legitimate expense is correctly coded and reclaimed
Bank reconciliation included — every transaction matched and unexplained differences investigated
Scheme review — we assess whether standard, flat rate, annual accounting or cash accounting VAT is right for your business
HMRC correspondence handled — any queries, VAT inspections or penalty notices are dealt with on your behalf
Ready for year-end — accurate bookkeeping throughout the year drastically reduces the cost and time of preparing annual accounts
What's included

Everything your bookkeeping & VAT needs

A comprehensive service covering every aspect of your bookkeeping and VAT obligations — nothing is left to chance.

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Monthly & Quarterly Bookkeeping

Full transaction recording, categorisation and reconciliation on a monthly or quarterly basis — keeping your ledgers accurate and up to date throughout the year, not just at year-end.

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VAT Return Preparation & Submission

Full preparation and MTD-compliant submission of your quarterly VAT returns to HMRC. We review every return before submission and flag any anomalies that could trigger an enquiry.

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Bank Reconciliation

Every bank and credit card transaction matched against your records. Any unreconciled items are flagged promptly — protecting against fraud, duplicate payments and errors before they compound.

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Cloud Accounting Setup & Migration

We set up and manage your cloud accounting platform — Xero, QuickBooks or Sage — including migrating from spreadsheets or older systems. You get real-time visibility of your finances at all times.

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VAT Registration & Scheme Advice

Whether you are approaching the VAT threshold (currently £90,000 turnover), considering voluntary registration, or reviewing your current scheme, we provide clear, commercially-focused advice on the most efficient approach.

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Catch-Up Bookkeeping

Behind with your records? We bring bookkeeping up to date quickly and accurately — whether that is a few months or several years — without disrupting your day-to-day operations or creating unnecessary risk with HMRC.

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CIS VAT Reverse Charge

The domestic reverse charge for construction services is one of the most commonly mishandled VAT rules in the UK. We handle it correctly — including identifying which supplies are in scope and accounting for them properly.

Construction
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Management Reporting

Monthly or quarterly profit & loss statements, balance sheet summaries and cashflow reports — giving you the management information you need to make confident business decisions between year-ends.

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International & Cross-Border VAT

Selling goods or services outside the UK? Post-Brexit VAT rules for EU and international trade are complex. We handle import VAT, zero-rating, place of supply rules and EC Sales List obligations where applicable.

Making Tax Digital

MTD for VAT — what it means for your business

Making Tax Digital (MTD) is HMRC's programme to move the UK tax system entirely online. For VAT, MTD has been mandatory since April 2019 for most businesses above the registration threshold — and since April 2022 for all VAT-registered businesses regardless of turnover.

Under MTD for VAT, you must keep digital records and submit your returns using MTD-compatible software — manual calculations and paper records no longer satisfy HMRC's requirements. Penalties for non-compliance can be significant.

Every client we act for is fully MTD-compliant. We use HMRC-recognised software to maintain your digital records and submit returns directly — you never need to log into HMRC's portal.

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MTD for Income Tax — coming April 2026 Self-employed individuals and landlords with income over £50,000 will need to keep digital records and submit quarterly updates to HMRC from April 2026. The threshold drops to £30,000 from April 2027. We are already preparing our clients for this change.
MTD rollout timeline
Live April 2019 — MTD for VAT (Phase 1) Mandatory for VAT-registered businesses with taxable turnover above the £85,000 threshold (since increased to £90,000).
Live April 2022 — MTD for VAT (Phase 2) Extended to all VAT-registered businesses regardless of turnover. Digital links between software became mandatory.
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Upcoming April 2026 — MTD for Income Tax Self-employed and landlords with income over £50,000 must submit quarterly updates digitally.
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Upcoming April 2027 — MTD for Income Tax (extended) Threshold reduces to £30,000. Further rollout to additional taxpayers expected in subsequent years.
VAT schemes explained

Which VAT scheme is right for your business?

HMRC offers several different VAT accounting schemes, each with different cash flow and administrative implications. Choosing the wrong one can cost your business money.

Standard VAT Accounting
Default

The default scheme — VAT is accounted for on an invoice basis when you issue or receive an invoice, regardless of when payment is made. Returns are filed quarterly. Most straightforward for businesses with regular, predictable income.

Best for: Businesses with consistent cash flow and straightforward supplies.

Cash Accounting Scheme
Cash flow friendly

Under cash accounting, VAT is only paid to HMRC once your customer has actually paid you — and you only reclaim VAT on purchases once you have paid your supplier. Eases cash flow pressure for businesses with slow-paying clients. Available for businesses with taxable turnover up to £1.35 million.

Best for: Small businesses with variable payment timescales or late-paying clients.

Flat Rate Scheme
Simplified

Instead of tracking individual VAT on each invoice, you pay HMRC a fixed percentage of your gross turnover — the rate varies by trade sector (ranging from 4% to 16.5%). You charge clients the standard 20% but pay less to HMRC, keeping the difference as profit. Available for businesses with taxable turnover up to £150,000. The limited cost trader rate of 16.5% applies to most businesses with low costs.

Best for: Service businesses and sole traders with low input VAT costs.

Annual Accounting Scheme
Less admin

Rather than quarterly returns, you file a single VAT return per year and make advance payments based on estimated liability — either 9 monthly or 3 quarterly payments. Reduces the volume of VAT administration and suits businesses that prefer a single annual review. Available for businesses with taxable turnover up to £1.35 million.

Best for: Businesses with stable, predictable VAT liabilities who want to reduce admin burden.

How it works

Getting started is straightforward

We make the transition to a new accountant as smooth as possible — most clients are fully set up within a week.

1

Initial consultation

We discuss your business, current record-keeping approach, VAT situation and what you need from us. No obligation.

2

Clear proposal

You receive a written proposal detailing exactly what we will do, how often, and what it will cost — agreed upfront with no surprises.

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Seamless setup

We set up or migrate your cloud accounting software, obtain access to your accounts and notify HMRC of our appointment as your agent.

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Ongoing service

Your bookkeeping is maintained regularly and VAT returns submitted on time every quarter. You receive confirmation after every submission.

Cloud accounting

We work with leading cloud accounting software

All our bookkeeping work is carried out using HMRC-recognised, MTD-compatible cloud accounting software. This means your records are accessible securely from anywhere, always backed up and fully compliant with Making Tax Digital requirements.

If you are currently using spreadsheets or desktop software, we will migrate your data cleanly — with no disruption and no data loss. If you are already on one of these platforms, we connect as your accountant and take over the management of your account.

Who we help

Bookkeeping and VAT for every type of business

We work with a wide range of businesses across West London and Surrey — from sole traders in their first year to established limited companies with complex VAT requirements.

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Sole Traders & Freelancers

Simple, affordable bookkeeping that keeps your self-assessment records clean and ensures you never overpay on VAT or miss a filing deadline.

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Limited Companies

Full monthly bookkeeping integrated with your year-end accounts and corporation tax return — one joined-up service with no gaps.

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Construction & Trades

CIS-aware bookkeeping with correct handling of the VAT domestic reverse charge — the most mishandled VAT rule in the construction sector.

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Retail & E-commerce

Multi-channel income reconciliation, stock accounting and correct VAT treatment for Amazon, eBay, Shopify and direct sales combined.

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Hospitality & Leisure

Cash-intensive businesses with complex VAT — mixed-rate supplies, catering VAT rules and EPOS reconciliation handled accurately.

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Import, Export & International

Post-Brexit cross-border VAT, import VAT recovery and the correct zero-rating of international supplies — complex rules handled precisely.

Common questions

Bookkeeping & VAT — your questions answered

You are legally required to register for VAT once your VAT-taxable turnover exceeds the current threshold of £90,000 in any rolling 12-month period (or if you expect it to exceed that in the next 30 days alone). Voluntary registration below this threshold is also possible and can be commercially advantageous if your clients are themselves VAT-registered — allowing you to reclaim VAT on your own business costs. We advise on whether voluntary registration makes sense for your specific situation.

The VAT registration threshold is £90,000 of VAT-taxable turnover in any rolling 12-month period — raised from £85,000 in the Spring Budget 2024. This is one of the highest VAT thresholds in the world. Once registered, the deregistration threshold is £88,000. These thresholds are kept under review and we always ensure our clients are monitoring their position against them.

From January 2023, HMRC replaced the old surcharge regime with a new points-based penalty system. Each late return adds a penalty point to your record. Once you reach a set threshold (4 points for quarterly filers), a £200 fixed penalty is charged — and a further £200 for each subsequent late return. Late payment interest is also charged on unpaid VAT at 2.5% above the Bank of England base rate. Because we track and submit all returns on your behalf, late filing should never be an issue for our clients.

Yes — HMRC allows businesses to reclaim VAT on certain costs incurred before registration. For goods, you can reclaim VAT on items purchased within the last 4 years that are still held by the business at the date of registration. For services, the lookback period is 6 months. The rules have specific conditions and the claims must be made on your first VAT return. We review all pre-registration costs to ensure nothing is missed.

Introduced in March 2021, the construction services domestic reverse charge (DRC) applies to VAT-registered businesses in the construction industry that are within the scope of the Construction Industry Scheme (CIS). Under the DRC, the customer — rather than the supplier — accounts for VAT on applicable supplies. This applies to most building and construction work supplied business-to-business in the UK, with some exceptions including supplies to end users and employment businesses. Getting this wrong can result in significant VAT errors in either direction.

Making Tax Digital for VAT requires you to keep digital records of all your VAT transactions and submit your returns using HMRC-approved software — spreadsheets alone are no longer sufficient unless they use a compliant bridging tool. In practice, this means using cloud accounting software such as Xero, QuickBooks or Sage. We manage all of this on your behalf — you simply need to ensure your invoices and receipts reach us. We handle the digital record-keeping, reconciliation and submission entirely.

Absolutely. Catch-up bookkeeping is one of the most common reasons businesses first contact us. Whether you are a few months behind or have not properly reconciled your records for several years, we bring everything up to date systematically and accurately. We also deal with any resulting HMRC obligations — such as late VAT returns or outstanding penalties — so you can start fresh with a clean record.

Get started

Ready to hand over your bookkeeping?

Get in touch for an initial consultation. We'll discuss your current setup, explain exactly what we'd do differently and give you a clear, transparent quote — with no obligation to proceed.

📞 01372253100