I'm trying to work out how much voluntary national insurance contributions are for an unemplyed person not on benefits, but I'm future planning, not elgible to do this now, so I can't do the online calculation. I will stop work about 5 years before I meet full state pension contributions and I want to budget how much it will cost to make those additional contributions. Costs will rise but I'd like to know this year's figures as a ball park estimate. Has anyone done this and feel able to let me know?