ShiftWise v0.4

Track your hours. Know your pay.

Offline · Local data

PROJECTED TAKE-HOME

£0.00

Gross pay—

Overtime gross—

TOIL deducted—

Pay forecast

Work period

Expected payday

—

Logged overtime0 hrs

Available TOIL0 hrs

Estimated PAYE—

Estimated NI—

Pension—

Other deductions—

TOIL from this month’s overtime

0 hrs available

Move the slider or type hours to bank. This reduces the pay forecast for the selected work month only.

Hours to bank

0 hrsUp to 40 hrs

Gross pay sacrificed£0.00

Estimated net sacrificed£0.00

TOIL remaining0 hrs

Hours used from bank

Using banked leave never changes your pay forecast.

Log overtime as you work

Work date

Hours (decimals accepted)

Overtime category

Overtime entries

Rate breakdown

Request TOIL from overtime

Bank TOIL against the month you earned overtime. It reduces the pay for that work period once. Taking the leave later only reduces your bank balance.

Work period

Hours to bank

Available TOIL

0 hrs

Leave already banked can be taken in a later month without a second pay deduction.

Date leave taken

Hours used

TOIL transactions

Pay and payroll settings

Annual basic salary (£)

Pay frequency

Payday rule

Fixed payday (1–31)

Four-weekly payday anchor

Overtime paid after (periods)

Tax code (e.g. 1282L)

NI category

Pension: % of pensionable basic + CRTP

Fixed pension per pay period (£, overrides % if > 0)

CRTP / pensionable allowance (£ per period)

Other taxable allowances (£ per period)

Holiday pay / additional earnings (£ per period)

The forecast uses simplified 2026/27 UK PAYE and NI estimates (Northern Ireland / England / Wales rates). It is not a payroll or tax advice service. Non-cumulative and complex tax codes, tax-year-to-date adjustments, Scottish rates, student loans and some pension arrangements need further work.

Custom overtime rates

Edit labels and multipliers freely. Decimals are preserved while typing. Existing logged shifts retain the rate used when entered.

Other deductions

Fixed amounts per pay period. Choose whether a deduction is taken before PAYE/NI (salary sacrifice), before PAYE only, or after tax.

Payslip accuracy score

When the payslip arrives, record actual take-home to see how close the forecast was. A snapshot of the current prediction is saved alongside it.

Work period

Actual take-home (£)

Backup and restore

Your entries are stored in this browser on this device. Export a backup regularly, especially before clearing browser data or changing phones.

Data management

ShiftWise v0.3 beta · Independent, unofficial pay-estimation tool. No connection to any employer, HMRC, NHS or government department. Last-working-day calculations exclude weekends but do not yet exclude bank holidays. Four-weekly cycles use a configurable anchor date. Your data remains in your browser unless you export it.