Accounting Services for UK Accounting Firms

From an owner’s perspective, making the right moves at the right time is critical. Managing an accounting firm requires competence, productivity, clear planning, and the ability to recognize and adapt to changes quickly.

At OSBOS , we provide complete Accounting Outsourcing Services to UK firms, helping them free their staff from routine, time-consuming tasks and enabling them to focus on value-added activities that drive growth and revenue.

We act as your end-to-end outsourcing partner—an all-in-one stop for all your accounting needs.

Bookkeeping Services for UK Firms

Our proficient bookkeeping services are tailored to meet the needs of UK accounting practices. We assist with:

  • Setting up chart of accounts

  • Implementing accurate VAT tax codes

  • Income & expense coding

  • Accounts receivable (AR) & accounts payable (AP) tracking

  • VAT return preparation under MTD

  • Bank reconciliations

Payroll Outsourcing Services

We provide reliable and efficient payroll outsourcing services to UK firms, including:

  • Setting up new employees (P45 & P46)

  • Weekly/monthly timesheet updates

  • Generating FPS/EPS under RTI

  • Preparing P35, P11D & P60 forms at year-end

Year-End & Accounting Production Services

OSBOS  supports tax preparation companies and bookkeeping service providers with a wide range of year-end accounting production services. Using advanced technology such as Sage Accounts Production, Digita, CCH, Keytime, and VT, we handle:

  • Year-end journals

  • Accruals & prepayments

  • Payroll reconciliations

  • VAT reconciliations

  • Drafting accounts with assumptions and working notes as per client requirements

Self-Assessment & Corporate Tax Return Processing

Our team of skilled professionals manages both personal and business tax returns for UK accounting practices. With in-depth experience in tax preparation outsourcing, we ensure compliance, accuracy, and efficiency.

We provide:

  • HMRC tax computations

  • Filing of self-assessment & corporate tax returns

  • Assistance with compliance and representation before HMRC

With years of experience and detailed knowledge of HMRC guidelines, we have helped accounting firms meet compliance standards while reducing their workload.

Xero Migrations

Xero, a leading cloud-based accounting software, is widely preferred for its efficiency in bookkeeping and overall financial management. Our experts assist with seamless Xero migration services, ensuring a smooth transition without data loss.

Software We Use

To deliver world-class outsourcing solutions, OSBOS  leverages some of the best accounting and payroll software, including:

  • Sage Line 50

  • VT Accounts / VT Final

  • Xero

  • QuickBooks & QuickBooks Online

  • ClearBooks

  • KashFlow

  • Sage Payroll

  • Payroo

  • BrightPay

  • Sage Accounts Production

  • Digita

  • IRIS

  • CCH Accounts Production

  • TaxCalc

Why Choose OSBOS ?

By combining expertise, technology, and reliability, OSBOS  has become a trusted outsourcing partner for UK accounting firms. We help you save time, reduce costs, ensure compliance, and empower your team to focus on higher-value services that grow your firm.

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