ToolNest Guides

ToolNest Guides

ToolNest Guides

Straightforward guides built around real calculations.

Straightforward guides built around real calculations.

ToolNest Guides explain the numbers behind everyday decisions, with worked examples and links to calculators you can use with your own figures.

ToolNest Guides explain the numbers behind everyday decisions, with worked examples and links to calculators you can use with your own figures.

Tax & Income

Tax & Income

Tax & Income

PAYE vs Self-Employed in 2026/27

PAYE vs Self-Employed in 2026/27

PAYE vs Self-Employed in 2026/27

Compare PAYE salary and self-employed profit, see estimated take-home pay and understand why the numbers are not directly equivalent.

Compare PAYE salary and self-employed profit, see estimated take-home pay and understand why the numbers are not directly equivalent.

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Tax & Income

Tax & Income

Tax & Income

£30k vs £40k vs £50k Salary: Take-Home Pay

£30k vs £40k vs £50k Salary: Take-Home Pay

£30k vs £40k vs £50k Salary: Take-Home Pay

See how Income Tax and National Insurance affect £30,000, £40,000 and £50,000 salaries in 2026/27.

See how Income Tax and National Insurance affect £30,000, £40,000 and £50,000 salaries in 2026/27.

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Read guide →

Read guide →

Vehicle & Household

Vehicle & Household

Vehicle & Household

How Much Does an Electric Heater Cost to Run?

How Much Does an Electric Heater Cost to Run?

How Much Does an Electric Heater Cost to Run?

See hourly, daily and monthly running costs for common electric heater sizes.

See hourly, daily and monthly running costs for common electric heater sizes.

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Read guide →

Read guide →

Finance & Money

Finance & Money

Finance & Money

Mortgage Overpayments: How Much Can You Save?

Mortgage Overpayments: How Much Can You Save?

Mortgage Overpayments: How Much Can You Save?

See how regular mortgage overpayments can reduce interest and shorten your mortgage term.

See how regular mortgage overpayments can reduce interest and shorten your mortgage term.

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Read guide →

Read guide →

Vehicle & Household

Fuel Cost Per Mile: How Much Does Driving Cost?

See how MPG, mileage and fuel price affect journey and annual fuel costs.

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Vehicle & Household

Fuel Cost Per Mile: How Much Does Driving Cost?

See how MPG, mileage and fuel price affect journey and annual fuel costs.

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Vehicle & Household

Fuel Cost Per Mile: How Much Does Driving Cost?

See how MPG, mileage and fuel price affect journey and annual fuel costs.

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Maths

Percentage Increase, Decrease & Reverse Percentages

Learn the formulas behind percentages, discounts, percentage change and reverse percentage calculations.

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Maths

Percentage Increase, Decrease & Reverse Percentages

Learn the formulas behind percentages, discounts, percentage change and reverse percentage calculations.

Read guide →

Maths

Percentage Increase, Decrease & Reverse Percentages

Learn the formulas behind percentages, discounts, percentage change and reverse percentage calculations.

Read guide →