Combining a bike with a train journey is ordinary practice here, right up until rush hour, when no ticket makes it possible at all. Anyone planning to do it regularly needs both the current price and the exact time windows, since one type of bike escapes the charge completely.
A regular bike costs €8.50 for a Fietskaart Dal as of 2026 — which is exactly what NS calls it now, an off-peak product rather than something you can buy your way around during rush hour. It's valid before 6:30am, between 9am and 4pm, and after 6:30pm on weekdays; outside those windows, specifically 6:30–9:00 and 16:00–18:30 on workdays, bikes simply aren't allowed on board at all, no ticket gets you around that. Weekends are unrestricted. The one genuinely free option is a folding bike — any time, any train, no ticket needed, which is exactly why so many commuters who need a bike at both ends switch to a folding one instead of paying per trip. The price has climbed steadily too, from €6.20 a few years back to €8.50 now, so it's worth factoring in if you're planning to combine cycling and trains regularly.