How much is available?

shades03

So Mortgages and so forth go over my head. I have a mortgage at the moment as a first time buyer scheme. So I want to move in a few years but I want to roughly work out what money I’ll have to use as a deposit for a new mortgage. My current deal is coming to an end so I want to work out how much I would pay off in the next 4 years to go with my 5% deposit and work our if I shorten how long I take my new offer I will actually get back paying that bit more each month. 

I hope that makes sense. Thanks for anyone who helps

MovingForwards

See my comments on your other thread.

Without knowing how much your mortgage was, how much H2B you had, what interest rate and mortgage term you have, no one can guess.

https://www.halifax.co.uk/mortgages/mortgage-calculator/overpayment-calculator/

Will give you an idea as to how much mortgage will be outstanding, then you will have your H2B on top of that outstanding, then the dip in price because the property is not a new build etc.

haras_n0sirrah

We would need a lot more information and it would depend largely on house prices and how fast you are paying the mortgage off (term)
Which lender are you with? 
If not sure why not contact a broker? Either get a recommendation or read the boards and pm a broker who you feel can help. We are not allowed to approach forumites but most of us are happy to respond to pm's. Most brokers offer free advice and can help you set up a plan on how to be able to get to where you want to be. If staying with your existing lender (I cant speak for everyone) but some of us dont charge for product transfers but will also compare against the rest of the market to make sure it is the best deal.