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Keep your books current enough to make decisions from them.

Bookkeeping Services for UK Businesses

Bookkeeping shouldn’t be a once-a-year exercise in working out where the money went. We keep transactions recorded and accounts reconciled regularly, so you can see what your business looks like now.

Final Filing Window: 1040 & 1120 returns are due soon. File now with our in-house CPAs. Starts at $350 per form. Simplify your bookkeeping Claim your FREE consultation today! 15% off on all services! Check out our pricing Now! Spend more, save more Ask about our FREE bookkeeping trial!
Why Clients Choose Us?

Beyond offering services, we complement your journey with our commitment to Satisfaction

Success In Numbers

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Our Bookkeeping Services

By the time an annual bookkeeping catch-up is finished, the tax year it covers is already closed. There's nothing left to plan around, you're just documenting what already happened, too late to change any of it.

We reconcile monthly instead, whether you need full outsourced bookkeeping services or just want to outsource your bookkeeping for the parts that eat up your week. Not because it sounds better, because it means your accountant, your lender, and you are all looking at numbers that are actually current when a decision needs making.

We've kept books accurate, not just tidy, since 2008, offering genuine bookkeeping help for small business owners who've been trying to keep on top of it alone. The businesses that come to us with a backlog almost always say the same thing, they meant to keep on top of it. We make sure that's never something you have to mean to do.

bookkeeping services

What We Offer

Accounting software set-up

Monthly transaction recording

Bank and account reconciliation

Accounts payable management

Accounts receivable management

Historical books cleanup

Financial statement preparation

White-label bookkeeping for accountancy practices

Industries We Serve

Tailoring Success Across Industries

Mercurius delivers precise bookkeeping services backed by industry expertise, ensuring accurate and reliable results across all sectors.

Accounting, Tax and CPAs

Ecommerce and Retail

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Law firms and Attorneys

Real Estate and Construction

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Education and Coaching

Seeking custom services?

Drop your email, and we’ll get in touch, or contact us directly.



    Why Outsource Your Bookkeeping to Us?

    Regular Updates

    Your records are updated regularly instead of waiting until year-end.

    Account Reconciliation

    Transactions are matched against your accounts, so errors and missing items are easier to identify.

    Ledger Management

    Bills, customer invoices and outstanding balances kept organised alongside your main books.

    Backlog Cleanup

    If you're already behind, we'll work through the backlog and bring the records up to date.

    Software Integration

    Xero, QuickBooks or Sage. You don't have to migrate just because you've changed bookkeeping providers

    Cost Efficiency

    Get regular bookkeeping support without taking on another full-time

    Client Testimonials

    Great work – love the dedicated member of the team that is assigned to work on my account.

    Graham Blair

    Habitat Seven Inc 🇨🇦

    Manvi and the team at Mercurius are excellent. We have been working with them for a number of years and they have been pivotal in keeping our accounts in good order.

    Cameron Kincaid

    Chemeyes Ltd 🇬🇧

    Siddhartha is delightful to work with and always completes assignments ahead of schedule and with no iteration needed.

    Mike Schoenfeld

    MBS Consulting🇺🇸

    Pleasant to work with, knowledgeable on accounting principles, responsive

    Christine Atieno

    Keys Please Homes🇺🇸

    Sid and his team so excellent work – on time and very attentive to detail.

    Joel Cape

    Joel E Cape, PLC🇺🇸

    Why Mercurius?

    4.7
    Rated 4.8 out of 5

    100+ Ratings on Google

    Experience the services that’s earned us top ratings.

    Understanding UK taxation rates and compliance requirements. | NetSuite accounting

    Smart Savings

    Senior accounting expertise without full-time salaries, benefits, or software overhead.

    Expert UK taxation advice for individuals and businesses.

    Total Safety

    UK GDPR and data protection compliance built right into the process.

    UK taxation services with expert filing support from Maspartner. | canada company formation | uae vat

    Dedicated Lead

    A single accountant who knows your business inside and out.

    UK taxation services with expert filing support from Maspartner. | canada company formation | uae vat

    Proactive Guidance

    Our experts provide valuable insights and accounting services to help you make informed business decisions.

    Software Expertise

    FAQs

    Hourly bookkeeping rates vary depending on the bookkeeper’s experience, location, software knowledge, and the complexity of your accounts. Some businesses prefer hourly support, while others choose fixed-fee bookkeeping services based on their transaction volume and monthly requirements. Comparing the total service and what’s included is often more useful than comparing hourly rates alone. 

    Bookkeeping involves recording and reconciling your day-to-day transactions, invoices, bills, and bank activity. Accounting uses those records for tax filings, financial statements, reporting, and financial planning. Bookkeeping services focus on keeping your records accurate and up to date, while accounting covers the wider financial and compliance picture. 

    Accurate bookkeeping gives you a reliable view of your income, expenses, cash position, and outstanding payments. It also provides the records needed for tax filings and financial reporting. Small business bookkeeping services can help owners keep these records current without having to manage every transaction themselves. 

    It depends on your circumstances and whether your business falls within Making Tax Digital requirements. Where digital record-keeping is required, HMRC expects businesses to use compatible software, although spreadsheets may still be used in certain circumstances when connected through appropriate bridging software. Online bookkeeping services can help businesses maintain digital records while keeping their accounting process organised. 

    HMRC can request records during an enquiry and may apply penalties where records are missing, inaccurate, or inadequate. If your records cannot support your tax return, HMRC may also make its own assessment based on the information available. Keeping your bookkeeping services up to date throughout the year can make it easier to respond if HMRC asks for supporting records. 

    Generally, yes. Professional bookkeeping and accounting fees incurred wholly and exclusively for business purposes can usually be claimed as allowable business expenses, subject to the normal tax rules. This means the cost of bookkeeping services may reduce your taxable profit.

    There is no single deadline that determines when bookkeeping becomes a problem, but the longer your records remain out of date, the harder it can be to identify errors and meet upcoming tax or reporting deadlines. A backlog can also make it difficult to understand your current cash position. Bookkeeping help for small business can be useful when records have fallen behind and need to be brought up to date. 

    Bank statements show that a payment was made, but they may not provide enough information to establish the nature and business purpose of the expense. You should keep the relevant invoices, receipts, or other supporting documents alongside your bank records. Good bookkeeping services should keep these records organised and linked to the relevant transactions. 

    Yes. Maspartner can provide outsourced bookkeeping services on a white-label basis, allowing accounting practices to keep the client relationship under their own name while we handle the agreed bookkeeping work in the background. The arrangement can be structured around the practice’s existing processes, software, and client requirements. 

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