Hi Jeremy, and thanks for your question! ERP charges are auto-deducted when you cross the gantry from your cashcard that should be inserted in your In-Vehicle Unit (IU). You can read more about IUs here: https://www.motorist.sg/article/524/everything-you-need-to-know-about-your-in-vehicle-unit-iu

If you are talking about how to pay ERP fines, you should have received a letter from LTA. You can make electronic payment through one of the following methods:

1) www.onemotoring.com.sg using the notice number located on the payment letter

2) Mobile payment via AXS m-Station

3) Internet payment via AXS e-Station at www.axs.com.sg or MySam at www.mysam.sg

4) Internet payment via AXS e-Station via the Motorist App. It is located under 'Maintain' > 'Traffic Offence'