Back to Scenarios
    Share:
    Worked Example

    Adding 20% VAT to a £500 Service Invoice

    See how VAT affects your invoice total and what you actually keep.

    Example Inputs

    amount
    £500
    vat Rate
    £20
    mode
    add

    You're a VAT-registered freelance designer. A client agreed to £500 for a logo design. How do you invoice them?

    The Mistake Most New VAT-Registered Businesses Make

    Wrong approach:

    • Invoice total: £500
    • Client pays: £500
    • You keep: £400 (£500 - £100 VAT to HMRC)

    You just gave yourself a 20% pay cut.

    The Correct Approach

    Right approach:

    • Agreed price: £500 (net)
    • VAT (20%): £100
    • Invoice total: £600
    • Client pays: £600
    • You keep: £500
    • HMRC gets: £100

    The client pays the VAT, not you.

    How to Quote Prices When VAT-Registered

    Always clarify:

    "My rate is £500 + VAT" or "£500 (ex VAT)"

    Never say: "£500 total" and then surprise them with £600 invoice.

    Real Invoice Example

    Invoice #001

    Logo design project: £500.00
    VAT @ 20%: £100.00
    Total due: £600.00

    Payment terms: Net 30 days

    What Happens to That £100 VAT?

    You collect: £600 from client
    You keep: £500 (your income)
    You hold: £100 in trust for HMRC

    On your VAT return (quarterly):

    • Output VAT collected: £100
    • Input VAT paid on expenses: (say £20)
    • Owe HMRC: £80

    You don't keep the full £100—you can reclaim VAT on your business expenses.

    VAT on Your Expenses

    You buy a new laptop:

    • Price: £800
    • VAT: £160
    • Total: £960

    You pay: £960
    You reclaim on VAT return: £160
    Net cost to you: £800

    This is why B2B clients don't mind paying VAT—they get it back too.

    The Cash Flow Reality

    Month 1:

    • Invoice client: £600
    • Client pays in 30 days
    • You have £600 cash

    Month 3 (VAT return due):

    • You owe HMRC £80 (after reclaiming expenses)
    • You pay £80

    Your cash: £600 - £80 = £520 (you keep £500, rounding diff for other expenses)

    Critical: Don't spend that £100 VAT! It's not your money.

    Common Pitfall: Mixing Prices

    Scenario:

    • You quoted £500 + VAT before registration
    • You register for VAT mid-project
    • Do you now charge £600 or £500?

    Answer: Check your contract. If it says "£500 + VAT" or "subject to VAT if applicable," you charge £600. If it says "£500 total," you eat the VAT (costly lesson).

    What If the Client Says "I Thought It Was £500?"

    Your response:

    "£500 is my fee. VAT is a government tax I must collect. I can't absorb it—HMRC still expects me to pay it whether I collect it or not. If you're VAT-registered, you'll reclaim this £100 anyway."

    Most B2B clients understand. If they're consumers, they might push back—but you can't lower it without losing money.

    Multiple Services on One Invoice

    Invoice #002

    Logo design: £500
    Business cards design: £150
    Website mockup: £350
    Subtotal: £1,000

    VAT @ 20%: £200
    Total: £1,200

    Client pays: £1,200
    You keep: £1,000
    HMRC gets: £200 (minus your input VAT)

    Should You Include VAT in Your Advertised Pricing?

    B2B services: List prices ex VAT ("£500 + VAT")
    Consumer services: Include VAT in prices ("£600 inc VAT")

    Why? Consumers think in total prices. Businesses think in net prices.

    Use our VAT Calculator to quickly add VAT to your invoices.

    Understanding Business Calculator Scenarios

    Business calculator scenarios provide practical frameworks for making informed financial decisions. These scenarios help entrepreneurs, small business owners, and financial planners evaluate different outcomes based on varying inputs. By using predefined situations, users can quickly test how changes in key variables affect their financial projections. This approach is particularly valuable when planning for growth, managing cash flow, or assessing investment opportunities. Each scenario serves as a template that demonstrates real-world applications of business calculators.

    Practical Applications in Financial Planning

    In practical terms, business calculator scenarios are invaluable tools for financial planning. They allow users to model different business situations such as startup funding requirements, expansion costs, or break-even analysis. For instance, a scenario might explore how changing pricing strategies impacts profitability, or how varying interest rates affect loan repayments. These applications help businesses prepare for various market conditions and make proactive rather than reactive decisions. The scenarios also support compliance with financial reporting standards by providing documented approaches to complex calculations.

    Maximising Your Calculator Results

    To get the most from business calculator scenarios, it's important to understand the underlying assumptions and limitations. Users should carefully review input parameters and consider how real-world factors might differ from modelled conditions. Regular updates to scenario data ensure accuracy in changing economic environments. Additionally, combining multiple scenarios can provide a more comprehensive view of potential outcomes. Businesses should use these tools as part of broader strategic planning processes rather than standalone decision-making instruments.

    Share this

    Try This Calculation Yourself

    Use the VAT Calculator (Add / Remove VAT) with these exact numbers to see the results in action.

    Open Calculator
    Advertisement