Sleek offers more inclusive, predictable pricing, with fixed packages from £60/month covering accounting, bookkeeping, tax filing and a dedicated accountant, while Osome starts at £71/month with key services often priced as add-ons.
Support and delivery models differ, with Sleek providing guided onboarding, phone/email/chat access and in-house accountants, whereas Osome focuses on app-based management with chat-led support.
Sleek includes broader specialist services and integrations, such as SEIS/EIS, R&D tax credits, crypto accounting and access to Xero’s wider ecosystem, while Osome is more ecommerce-focused with modular service options.
Weighing up Sleek vs Osome? We get it, choosing between the two can feel tricky. Both aim to cut paperwork and keep small UK businesses compliant with accounting services. But they differ in what’s included, how pricing scales, and how support is delivered.
This guide gives you a clear breakdown of both platforms so you can weigh up their strengths side by side and decide which is the best match for your business.
Sleek vs Osome: Side-by-side comparison
A detailed breakdown of Sleek vs Osome
Here’s a breakdown of what you get with each platform. Scroll down for a deep dive into what these features mean in practice.
| Feature / Service | Sleek | Osome |
|---|---|---|
| Online Accounting | Starting from £60/mo* | Starting from £71/mo* |
| Dedicated Accountant | Starting from £60/mo* | Starting from £71/mo* |
| E-Commerce Accounting | Starting from £60/mo* | Starting from £71/mo* |
| Bookkeeping Services | Starting from £60/mo* | Starting from £71/mo* |
| Tax Filing | £250 + VAT* | Starting from £71/mo* |
| Payroll Services | Starting from £80/mo* | Starting from £10/pm, per employee* |
| Company Incorporation (Basic Registration) | From £2.99 via Limited Companies + 50% off accounting | Starting from £50* |
| Fully Managed Company Formation (Premium) | £245 + VAT including registered office, director service address, first confirmation statement & bank account | Not specified as bundled |
| Pricing Model | Annual / monthly | Annual |
| Google Review Score | 4.8 | N/A |
| Trustpilot Score | 4.1 | 3.9 |
| R&D Tax Credits | ✓ | ✕ |
| Crypto Accounting | Starting from £60/mo* | ✕ |
| SEIS/EIS Advance Assurance & Compliance | Starting from £250 + VAT* | ✕ |
Prices shown are the lowest publicly listed rates on each provider’s UK site at the time of writing. Features and pricing can change; please verify before purchase. Sleek’s 50% discount with incorporation is excluded from direct price comparisons to keep like-for-like fairness. *Billed Annually.
When comparing Sleek vs Osome, look beyond the starting price and consider what is bundled, what is charged as an add-on, and how each provider supports you long term.
When comparing accountants, do not just look at today’s price. Ask what happens when your revenue increases, you hire staff, or you register for VAT. Will you be moved to a higher tier automatically?
Are services like payroll, VAT returns, or confirmation statements included, or added later as extras?
Can your accountant support funding rounds, R&D claims, or share schemes if you need them?
The cheapest option at £60 to £70 per month can look very different 12 months later if add-ons start stacking up.
Choosing an accountant that scales cleanly with your business can save you far more than the headline monthly fee.Who is Sleek?
Sleek is a modern accounting and business compliance provider founded by entrepreneurs in 2017. Sleek is built on a tech-first approach and shaped around accountants for the future. Our goal is to help business owners cut through admin and focus on growth.
Sleek deliver a digital-first setup that puts smart technology at the centre of company admin. Unlike many firms, every accountant you work with is part of our in-house team. That means no outsourcing, no disconnect, and a single trusted partner for the long term.
Our core services include:
- Company incorporation and corporate secretarial
- Full accounting and bookkeeping
- Payroll and compliance management
- Tax filing and advice
Beyond accounting, Sleek provides end-to-end business support under one roof. From incorporation to expansion, Sleek is set up to be your continued growth partner.
Sleek are also a Xero Platinum Champion partner with certified staff across Xero Advisor and Xero Payroll. This means Sleek clients benefit from expert support in using Xero to automate bookkeeping, VAT, payroll, and reporting.
By combining powerful tech with in-house expertise, Sleek streamlines routine admin while staying personal. Sleek are a certified B Corp, & have supported over 450,000 businesses worldwide, and currently serve more than 15,000 active customers.
Who is Osome?
Osome is a Singapore-headquartered platform for incorporation and online accounting, founded in 2017 and active in the UK, Hong Kong, and Singapore.
Its UK offer centres on a dedicated accountant with live-chat-led support (site indicates typical responses within 24 hours), plus software that supports ecommerce integrations with Amazon, Shopify, and eBay.
Services include bookkeeping, annual accounts, VAT, payroll, and tax filing. Osome sells tiered accounting packages and also offers company formation. Its site publishes clear entry-level pricing.
The company reports serving more than 11,000 businesses across its core markets. It is also a recognised partner within the Xero ecosystem.
Osome vs Sleek: Features, pricing, support and more compared
Sleek vs Osome: pricing comparison
Although Sleek and Osome both market themselves as digital-first accountants, their pricing models differ in structure and transparency.
Sleek is built around fixed, inclusive packages designed to keep costs predictable, while Osome takes a more modular approach where add-ons can push the overall price higher as your business grows.
Sleek
Sleek offers a fixed monthly fee starting at £60/mo, billed annually, which covers online accounting, bookkeeping, tax filing, and access to a dedicated accountant. There is no hidden pricing, no paywalls for advice, and no need to bolt on extras, everything you need is included from the start.
Sleek offer two packages, Accounting Basic and Accounting Pro, designed around your revenue and stage of growth. The structure is simple, scalable, and easy to budget for, and payroll and pension filing for 1–5 employees is included in plan pricing.
Osome
Osome’s entry plan starts at £71/mo, billed annually, and this is the base rate. Several essentials are priced as add-ons, including:
- VAT filing: £50/month
- Payroll: £10/month per employee
- Registered London office address: £100/year
Accounts are moved to a higher-tier Scale plan once annual revenue reaches £350,000. This will not apply to everyone, but it shows how total costs can rise as your headcount and revenue grow, and as you add services.
If you prefer a modular setup where you pick and choose services, Osome can suit that approach. If you want everything included upfront for predictable costs, Sleek remains the simpler and often more affordable option.
Sleek vs Osome: Company incorporation
Both Sleek and Osome offer company formation, but the value, flexibility, and included extras differ. Sleek uses clear tiers with bundled support, while Osome relies more on paid add-ons.
Sleek
Register a limited company from £2.99 plus the £50 Companies House fee. Every tier also includes a 50% discount on Annual Accounting.
- Starter (from £2.99): Limited company registration, essential digital certificates, Sleek dashboard access, business bank account referral.
- Privacy (from £19.99 + VAT): Everything in Starter, plus Registered Office (London) and Director Service Address.
- Privacy + Admin (from £39.99 + VAT): Everything in Privacy, plus Dedicated Account Manager, Business Address (London), Digital Mailroom.
- Peace of Mind (from £49.99 + VAT): Everything in Privacy + Admin, plus First Confirmation Statement filing, VAT registration, PAYE registration, Company administration service.
Osome
Osome sells company formation with core deliverables and optional add-ons. The site highlights:
- Registered London office address: £100/year.
- VAT registration: £50. PAYE registration: £50.
- Confirmation statement and unlimited corporate changes: £100/year.
- Accounting services: start from £71/month on annual billing.
- All-in-one for UK residents: £289 + VAT. This bundle includes formation, documents, and a registered office, but it does not state PAYE as included.
If you want everything bundled with clear inclusions and fewer add-ons, Sleek’s tiers keep costs predictable. If you prefer a modular setup and are comfortable adding services as needed, Osome can work, but total cost will vary with the extras you choose.
Why Sleek might have more support for specialist & scaling businesses
Sleek know early-stage and scaling businesses often need something a bit more than basic accounting. That’s why they also support:
- SEIS/EIS advance assurance & compliance
- R&D tax credit claims
- Crypto accounting for UK tax compliance
From what we can see, Osome’s UK site does not currently promote these services as packaged offerings.. So if these are part of your growth plan, this might be a deal breaker.
Sleek online accountants vs Osome: accounting services & essentials
Let’s get into the practicals. Bookkeeping, tax filing, and financial reporting are core to any service, but delivery differs. Sleek and Osome take different approaches, so here is what to expect from each.
|
Accounting feature |
Sleek |
Osome |
|
Bookkeeping services |
Flexible bookkeeping tailored to your size and reporting needs. Includes invoice prep, reconciliations, and unaudited statements with weekly, monthly, or annual options. |
Unlimited bookkeeping is promoted within packages. Software automates invoicing, payments, and expenses with real-time cash-flow insights. |
|
Audit and tax filing |
Full year-end accounts and tax filing, including management accounts, computations, and statutory submissions. Guidance available for more complex setups. |
Year-end accounts, VAT, payroll, and tax returns offered. Confirmation statement and company changes available as a paid annual service. |
|
Dedicated accountant |
Every client is matched with a dedicated accountant who knows the business and gives ongoing advice. |
Dedicated accountant with live chat responses within 24 hours. |
|
Flexible document submission |
Send expenses and invoices via email, WhatsApp, or directly in the Sleek platform. |
Upload and chat via Osome’s web platform and mobile apps. Specific file-intake channels beyond the app are not detailed. |
|
Bank integrations |
Direct feeds from selected UK banks to keep records up to date. |
Bank feed integration is available to link UK business accounts for automated bookkeeping. |
|
Accountant calls on demand |
Book calls with your accountant as needed. Year-round support with no hard limits. |
Primary support channel is live chat with replies within 24 hours. Phone availability is not stated. |
|
Guided onboarding |
Live onboarding session to set up the platform and get value from day one. |
Onboarding guided by a dedicated accountant, with emphasis on a seamless transition. |
|
Dividend declaration support |
Help available if you need to declare dividends. Monthly plans can include one-off dividend support. |
Not specified on the UK site. No clear statement about dividend minutes or vouchers. |
|
Expense and transaction tracking |
Packages include full tracking of expenses and transactions for a complete financial view. |
Software automates expenses and provides real-time visibility. Ecommerce add-ons focus on marketplace data. |
|
Tailored accounting solutions |
Custom setups for high volumes or complex transactions, including ecommerce and multi-entity needs. |
Tiered plans sized by stage and revenue, with ecommerce-focused accounting and marketplace integrations. |
|
Compliance built in |
Compliance is woven into the process with reminders and guidance in-platform. |
Compliance services offered, but some filings such as confirmation statements are positioned as add-ons. |
|
Local presence |
UK-based team providing accounting, tax, and compliance to UK-registered businesses.. |
UK presence stated, with accountants serving UK clients and a London base referenced on site. |
Osome vs Sleek: company secretarial services
For limited companies, staying compliant is non-negotiable. Sleek offers bundled company secretarial support, while Osome mixes core filings with paid admin add-ons. Here is how they compare.
These services are included with our incorporation support. Discover more about our offerings on our company formation services page.
Company secretary feature | Sleek | Osome |
Core company secretarial services | Sleek provides core company secretary support to help directors meet their legal obligations without the admin stress. | Company admin available as add-ons, including confirmation statements and corporate changes. |
Statutory records maintained | Sleek update and manage your statutory registers, including shareholders, directors, and persons of significant control. | Not clearly stated on the UK site whether Osome maintains statutory registers on your behalf. |
Changes to directors | Whether you need to appoint a new director or update existing details, Sleek manage the process and submit the paperwork on your behalf. | “Unlimited corporate changes” is listed under company admin, implying Osome can file changes with Companies House. Task scope is not itemised. |
Dormancy declarations | If your business is not trading, Sleek will guide you through the process of declaring your company dormant. | Guides indicate Osome supports preparing and submitting dormant accounts, but no UK price is shown. |
Company updates and changes | Sleek assists with changes to your business name, structure, or nature of trade, ensuring all updates are correctly filed. | Confirmation statement with unlimited corporate changes offered as an annual service. Specific forms covered are not detailed on the pricing page. |
Clear and upfront pricing | All company secretarial services and optional add-ons are listed transparently in the platform. No surprises. | Published prices include Confirmation Statement & unlimited corporate changes £100/year, VAT registration £50, Registered London office £100/year. Other co sec tasks are not itemised. |
Registered office and service address | Need to update your registered address? Sleek take care of the changes so your records stay compliant. | Registered London office is available at £100/year. Director service address is referenced in guides and bundles, but standalone pricing is not listed. |
Dividends and share updates | From issuing dividends to transferring or allotting shares, Sleek manages the admin so you don’t have to. | Content covers SH01 and share allotments, but a priced UK filing service is not shown on the pricing page. |
Osome integrations vs Sleek integrations
Sleek and Osome approach integrations differently. Sleek builds on Xero’s broad ecosystem, while Osome focuses on native links for ecommerce and payments.
Sleek integrations
Sleek is a Xero partner, and Sleek build your records on Xero for real-time reporting, live dashboards, and access to Xero’s app store. Xero connects with Stripe, Shopify, and PayPal for fast payments and easy reconciliation, and it is HMRC-recognised for Making Tax Digital.
Headline integrations you can use with Sleek:
- Stripe for invoice payments and automatic reconciliation
- Shopify with the Xero connector for daily sales summaries
- PayPal as a payment service inside Xero
- Hundreds more through the Xero App Store
Osome integrations
Osome provides built-in connections for common ecommerce platforms and payment services, with automatic data sync into its accounting. Bank feeds use open banking connections, and ecommerce links focus on marketplace and store sales.
Headline integrations available with Osome:
- Shopify for order and payout syncing
- Amazon and eBay for marketplace sales data
- PayPal and Stripe for payment reconciliation
- UK bank feeds via open banking connections
If a specific niche tool is required, Sleek’s Xero setup gives the widest range through the app ecosystem. Osome’s list is more focused on core ecommerce and payment channels.
Sleek vs Osome: Onboarding and Switching Accountants
Switching accountants should feel straightforward, not stressful. Here is how both providers handle it. We have a full in-depth guide on what signs indicate it might be time to switch accountants; as well as how to do it.
Sleek onboarding
With Sleek:
Free company formation
50% off your accounting package when you incorporate
Full setup for Making Tax Digital
Bank feeds and app integrations connected for you
Complete handover from your previous accountant
Guided onboarding call with clear next steps
Ongoing support by email, phone, and chat
You are set up to be compliant from day one, with a clear roadmap.
Osome onboarding
With Osome:
Plan selection inside the app
Introduction to a dedicated accountant
Bank and ecommerce integrations configured
Support primarily via in-app chat and email
The experience is app-led, with communication centred around chat.
Important to consider
Both providers bill annually
Cash flow planning matters if you are a new business
Check what is included in your base plan before committing
If you want a fast start, free formation, and an MTD-ready setup built around direct access to your accountant, Sleek offers the smoother transition.
Sleek vs Osome: Certifications and awards
Awards and certifications are not everything, but they can help show industry standing. Here is how Sleek and Osome compare.
Type | Sleek | Osome |
Awards | Recognised in fintech and startup lists including:
|
|
Certifications |
|
|
Osome vs Sleek UK: Customer reviews
Sleek scores 4.1 out of 5 on Trustpilot, compared with Osome’s 3.9 out of 5. Sleek also holds a Google rating of 4.5 out of 5.
Independent reviews reflect customer experiences, and Sleek places emphasis on consistent service, clear communication, and availability, with the aim of making accountancy straightforward and accessible.
Sleek vs Osome: Which provider is right for you?
Both Sleek and Osome help UK business owners stay compliant and reduce the admin burden of running a company.
Choose Sleek if you want:
- Fixed, inclusive pricing (pay once, fewer add-ons)
- Guided onboarding + in-house accountants
- Xero-based setup with broad integrations
- Optional SEIS/EIS, R&D tax, and crypto support
Choose Osome if you prefer:
- Modular pricing with add-ons as you grow
- Ecommerce-focused integrations out of the box
- Chat-led support within the app
Comparing Osome alternatives or searching for the best online accountants in the UK in 2026? Start by looking at what your business needs right now, then choose the service that saves you time and keeps you focused on growth.
Thousands of UK businesses have already chosen Sleek.
Book your free consultation today and see how straightforward accounting can be.
Disclaimer: The preceding information is not legal advice. This content is aimed to provide general guidance. For more formal or legal advice, contact Sleek directly.
450,000
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satisfaction rate from
16,000 surveyed clients.
FAQs on Sleek vs Osome
Sleek VS Osome: Is it hard to switch from another accountant to Sleek?
Not in the slightest. We’ll handle the transition, work with your previous provider if needed, and ensure your deadlines stay on track without any stress.
You can move your existing company over to Sleek any time. And if you’re just starting out, our fully managed company formation service includes everything from as little as £245 including government fees.
Can I register a company with Sleek if I haven’t started trading yet?
Yes, you can set up your limited company with us before you start trading. Our free Starter package includes all the legal documents and Companies House registration.
What if I need more support when switching to Sleek?
We’ve got you covered. From R&D tax credits to SEIS/EIS and crypto compliance, our services are tailored for modern UK businesses that want to grow without red tape.
Is Sleek suitable for e-commerce businesses or crypto income?
Yep! We integrate with Shopify, Stripe, PayPal, and other tools via Xero. It’s seamless, secure, and fully MTD-compliant.
When looking at Sleek vs Osome, what’s the difference in cost to get started?
Our accounting plans start at £60/month*, and company formation is free (you’ll just pay the £50 Companies House fee). We keep it all upfront with no hidden extras.
View more
How does Sleek VS Osome compare for new businesses?
Both offer incorporation support, but only Sleek gives you a 50% discount on accounting services when you register your company with us. That’s a major head start if you’re just setting up.
