Outsourcing vs Hiring an Accountant

Outsourcing vs Hiring an Accountant: 2025 Cost-Benefit Analysis for Small UK Firms

When your client roster balloons beyond 30 and you’re torn between outsourcing vs hiring an accountant, 2025’s numbers make the decision starker than ever. Below we unpack real salary data, the new 15 % employer NI hike, and why outsourcing (or offshoring a dedicated team) now saves up to 57 % without sacrificing quality.

The Dilemma: In-House Hire or Outsource Accounting Work?

Hiring locally feels comfortable, but recruitment lead-times stretch to 4 – 6 months, and UK accountant salaries keep rising. Meanwhile, specialist outsourcing providers or offshore partners can onboard talent in weeks.

2025 Cost Breakdown (Industry Cost Benchmarks): Salary, NI, Pension & Overheads vs Outsourcing Fees

Annual cost

 In-house 

Offshore

Outsourced

Base salary

£31,605 average UK salary

£16,000 (50 % lower)

£13.33 × 1,600 h = £21,328

Employer NI (15%) 

£4,741 (rate rises Apr 2025)

£0 (not subject to UK NI)

Included

Auto – enrolment pension (3%)

£948

n/a

Included

Office / software / overhead

£5,000 (desk, licence, utilities)

£2,000 (remote tooling & provider admin)

Included

Total annual cost

£42,294

£18,000

£21,328

Saving vs UK hire

/

– 57%

– 49%

 “Figures compiled from 2025 ONS Salary Survey, Hays Salary Guide and publicly-available outsourcing/offshoring rate cards. Remote Professionals provides bespoke quotes—contact us for an exact proposal.

Quality & Expertise: Local Employee vs Specialist Outsourced Team

  • Specialisation on tap. Reputable providers deliver ACCA/CA-qualified staff versed in UK GAAP – often ex-Big 4 alumni.
  • Process controls. You keep review rights: assign work in Xero, lock files, and approve journals just as you would with an in-house hire.
  • Cultural fit. South Africa’s near-shore time-zone (GMT +2) gives 6 hours of overlap for live reviews, erasing the “midnight email lag”.

Flexibility & Scalability

Scenario

In-house hire 

Outsourcing / Offshoring

Busy season spike

Overtime or temp agency fees

Add hours or an extra seat for 3 months

Slow quarter 

Full salary still due 

Scale down retainer or hours

New service line

Recruit & train

Plug in a specialist from partner bench

Growth & Client Service Impact

With bookkeeping and compliance off your plate, partners reclaim ~10 hrs/week for advisory calls—clients notice, retention lifts, and you up-sell strategic projects.

Verdict: When Outsourcing Wins

If your firm:

  1. Has <50 staff and fights deadline backlogs.

  2. Faces salary + NI inflation.

  3. Wants predictable margins ahead of the 2026 MTD crunch.


Outsourcing or offshoring a dedicated accountant beats hiring—by £20k+ a year.

Keep Your Firm Growing!

Make sure you’re on the right track and spending you’re teams valuable time where it matters most… on your clients! Check out other parts of our website to get some more value for your firm and feel free to book a call if you ever have any questions.

Start with our comparison of outsourcing and offshoring for UK accounting firms:

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