Interface INiCalculator

Namespace

Payetools.NationalInsurance

Assembly

Payetools.NationalInsurance.dll

Interface for types that provide National Insurance calculations.

public interface INiCalculator

Methods

Calculate(NiCategory, decimal, out INiCalculationResult)

Calculates the National Insurance contributions required for an employee for a given pay period, based on their NI-able salary and their allocated National Insurance category letter.

void Calculate(NiCategory niCategory, decimal nicableEarningsInPeriod, out INiCalculationResult result)

Parameters

niCategory NiCategory

National Insurance category.

nicableEarningsInPeriod decimal

NI-able salary for the period.

result INiCalculationResult

The NI contributions due via an instance of a type that implements INiCalculationResult.

CalculateDirectors(DirectorsNiCalculationMethod, NiCategory, decimal, decimal, decimal, decimal, decimal?, out INiCalculationResult)

Calculates the National Insurance contributions required for a company director for a given pay period, based on their NI-able salary and their allocated National Insurance category letter.

void CalculateDirectors(DirectorsNiCalculationMethod calculationMethod, NiCategory niCategory, decimal nicableEarningsInPeriod, decimal nicableEarningsYearToDate, decimal employeesNiPaidYearToDate, decimal employersNiPaidYearToDate, decimal? proRataFactor, out INiCalculationResult result)

Parameters

calculationMethod DirectorsNiCalculationMethod

Calculation method to use.

niCategory NiCategory

National Insurance category.

nicableEarningsInPeriod decimal

Ni-able earnings in this period.

nicableEarningsYearToDate decimal

NI-able salary to date.

employeesNiPaidYearToDate decimal

Total employees NI paid so far this tax year up to and including the end of the previous period.

employersNiPaidYearToDate decimal

Total employers NI paid so far this tax year up to and including the end of the previous period.

proRataFactor decimal?

Factor to apply to annual thresholds when the employee starts being a director part way through the tax year. Null if not applicable.

result INiCalculationResult

The NI contributions due via an instance of a type that implements INiCalculationResult.