Day rate to annual income and take-home.
Annual take-home
—
Gross income
—
Net day rate
—
Income tax
—
USC
—
PRSI
—
From a headline day rate to what you keep
A day rate looks generous until the tax comes off. This calculator turns a contractor’s day rate into an annual gross, strips out expenses, and then runs the result through the self-assessed tax position of a sole trader: income tax at 20 and 40 percent less the earned income credit, USC on a sliding scale, and PRSI at 4.1 percent. What you are left with is the real annual take-home and, usefully, the net value of a single billed day after all of that.
The framing matters because a contractor carries costs an employee never sees. There is no employer covering half the social insurance, no paid holidays, no sick pay, and no pension contribution unless you fund it yourself. The gross here is your rate multiplied by the days you actually bill, minus the expenses you can legitimately claim, so realistic inputs for billable days and expenses are what make the output trustworthy.
A €500 day rate over 220 billable days
Take a single contractor charging €500 a day, billing 220 days in the year, with €5,000 of allowable expenses. Gross income is 500 times 220 less 5,000, which is €105,000. Income tax after the earned income credit comes to €31,200. USC is about €4,594, and because the gross sits above €100,000 the self-employed USC surcharge has kicked in on the slice over that line. PRSI at 4.1 percent is €4,305. After all three, the take-home is around €64,901 for the year, which is roughly €5,408 a month. Spread across the 220 billed days, the net day rate is about €295, well under the €500 headline.
| Line | Amount |
|---|---|
| Gross (€500 x 220 days less €5,000 expenses) | €105,000 |
| Income tax after earned income credit | €31,200 |
| USC, including the surcharge over €100,000 | about €4,594 |
| PRSI at 4.1 percent | €4,305 |
| Annual take-home | about €64,901 |
| Net day rate | about €295 |
The 3 percent surcharge over €100,000
That surcharge in the example is worth understanding, because it bites exactly the contractors this tool is built for. Self-employed income above €100,000 attracts an extra 3 percent of USC on the excess, on top of the normal bands. So a sole trader earning €105,000 pays the additional 3 percent on the €5,000 over the threshold. It is a quiet reason that pushing a strong day rate to high annual earnings as a sole trader gets progressively less efficient, and it is the point at which many contractors start asking whether to incorporate.
Sole trader or limited company?
That is the strategic decision sitting behind this calculator. As a sole trader, all the profit is taxed in the year you earn it at your personal rates. Trading through a limited company lets profit be taxed first at the 12.5 percent corporation tax rate, with you drawing a salary and leaving the rest to be extracted later, which can defer tax and smooth income across years. The catch is extra cost, compliance, and the close-company surcharge on undistributed investment income, none of which this tool models. For a contractor consistently clearing six figures, getting proper advice on the company route usually pays for itself.
How many billable days should I assume in a year?
Be conservative. There are about 260 weekdays in a year, but holidays, public holidays, sick days, admin, and gaps between contracts all eat into billable time, so most full-time contractors realistically bill somewhere between 200 and 230 days. Using 260 will badly overstate your income, which is why the tool defaults to a more realistic figure and lets you adjust it.
Do I need to worry about preliminary tax?
Yes. As a self-assessed contractor you pay preliminary tax for the current year by the October deadline, usually based on the prior year’s liability, alongside the balance for the year just gone. That means your first full year can involve paying close to two years of tax at once, so set money aside from each invoice rather than being caught short when the bill lands.