Engine

Your pay rules, not ours.

Every earning, deduction and tax in HRMSPay is a rule you configure: a fixed amount, a percentage, a bracket table, a lookup, a condition or a formula. New allowance, new country, new law: change the rules, not the software.

Book a demo See pricing

my-workspace.hrmspay.com/dashboard/payroll-config

HOUSING_RELIEF · Formula

Housing allowance cap

Formula is valid

min(ref('BASIC_SALARY') * 0.15,
    const('HOUSING_CAP'))

Uses

BASIC_SALARY · runs after it

Effective

From 1 July 2026

Try it on Grace Wanjiku

BASIC_SALARY89,750.00

HOUSING_CAP20,000.00

Result13,462.50

What you get

Six kinds of rule
Fixed, percentage, bracket, lookup, conditional and formula, each with caps and minimums where you need them.
Formulas in plain terms
min(ref('BASIC') * 0.333, ref('HOUSE')): build them in the Formula Builder, check them and test them on a real person before saving.
Dated, never overwritten
Rules take effect from a date, so back pay and reversals use the rules that applied at the time.
Order that can’t loop
Rules run in a set order and can only use what’s already worked out, checked when you save.
Countries and currencies
Add a jurisdiction with its own currency, rates and returns, alongside the ones you have.
Built for developers too
A documented API, and new calculation types or country modules plug in without changing what’s already there.