Then you’re into the nitty gritty of being money savvy, money saving expert is great for this.
But just off top of my head as it were:
Shop around and HAGGLE with your suppliers. They’ll charge you as much as you’re fool enough to pay to be honest.
Rent/mortgage, council tax and tvlicence are fixed - EVERYTHING else is up for negotiation and adjustment.
Water - as well as shopping around adjust your usage. Reuse water around the house eg water used for cooking can be used to water plants, there are ways to reduce how much water you use for flushing, bathing etc
Gas/electricity - again as well as shopping around (money saving expert site has an energy club to help you keep on top of switching at the right time) reduce usage, efficient use of appliances, and I bet your dc are buggers for not turning off lights and switches?
Groceries - shop and cook more efficiently and frugally, use up leftovers, cook to make best use of stocks, learn how to extend the life of foods. In terms of non foods supermarkets are generally the MOST expensive shops for cleaning products and toiletries. You’re usually better off getting these products in places like wilko, home bargains, b&m, bargain chemists etc Are you top up shopping because you’re running low on perishable essentials like bread and milk? If so
1 plan to buy more of these if you have the storage - perhaps Declutter so you can manage this? I am also a little bit of a prepper (was SO glad when the panic buying hit!) and I have crates in the bedroom where I store ambient, non food items like cleaning products and toiletries.
2 get long life milk and store a loaf in the freezer? So you’re not tempted to “pop in” just to get a pint and then end up spending on stuff you didn’t really need! Remember supermarkets and even corner shop franchise heads spend £100,000’s on experts whose sole job is to make people “just popping in” to buy things they weren’t intending to.
Are the kids being locusts? Perhaps they’re eating more than you’re anticipating and you need to revise shopping habits to provide filling but cheap and healthy items? Teens are bottomless pits!! My Dd is extremely slim, not a big eater in comparison to her peers and yet since she left home I’m spending 2/3 less on food!
As pp said - another MSE tip - experiment with dropping brand levels too, if you use Hellman’s mayo drop to supermarket own, if you use supermarket own drop to budget. If you really don’t like it then go back up a brand. Personally I can’t abide budget cereal but I’m fine with supermarket own, I only use fairy original liquid but I never pay full price but buy the biggest pack when on offer only, but I’m fine with budget beans, tinned fruit and veg, Passata etc
Cook from scratch inc sauces they’re dead easy most of them and healthier too.
Transport - as you drive, learn to drive efficiently, most people don’t! Again loads of tips on money saving expert and also AA and RAC and other motoring sites teaching you how to drive to reduce fuel consumption, also car maintenance is essential to maximise fuel economy and reduce mot costs. Don’t go to commercial garages to get mot there’s council mot centres and they’re less likely to find stuff “wrong” because they won’t profit from unnecessary repairs. Have a good rough idea of what your mot and any likely repairs are going to be and set aside a sum EVERY month ready for it. Shop around and haggle hard for insurance, be well informed and you’re less likely to get shafted! Which frankly it sounds like you currently are being unless car is an old banger - and there comes a point with every car where it’s no longer worth holding on to if it’s costing too much in repairs/maintenance/inefficient fuel use.
Clothes and shoes - make the most of sales and special offers. I am now in a habit of having a running list on my phone (this came about because I was forever buying tops but running short on bottom half items, plus when i was shopping for dd I kept a note of her current size and what she was needing so if I spotted something in a sale I knew it was genuinely a bargain) of what I need. The style & beauty people would probably be horrified but I now know and stick to the styles and colours I know
A suit my shape and colouring
B will easily go with most of the rest of my wardrobe in terms of style and colour
BE HONEST about what you will wear and get use out of. Eg I love shoes and especially heels but I’m a 5’2” dumpy 48 year old. 6 inch sling backs are NOT something I will wear more than once!
Be practical and if you aren’t already skilled in these areas seriously consider learning and/or adapting - eg make do and mend - before chucking an item of clothing can it be salvaged? Learn how to deal with stains. A lost button, loose hem etc is really no reason to Chuck these are easily fixed, even if it means wundaweb and asking someone else to sew a button on (but ask nicely and return the favour!) I’m pretty adept at most things but struggle replacing zips on jeans due to the fabric - find out your best local alterations place and become their best customer! As I said also a short arse so I’ve also used such places to shorten some skirts and trousers (depending on style and fabric it can be more complicated than simply taking up the hem), dd has also learned over the years to customise and adapt things. She has amazed friends at times with stained tops dyed black, and particularly the time she “cannibalised” 2 wrecked jackets to create one good one. Get insoles for shoes to prolong their life, not wearing the same ones every day also does this. Look after them - polishing doesn’t just keep them clean it keeps them intact! Watch where you’re stepping! But IF there’s an issue before discarding take to a repair place - you’ll be AMAZED what they can salvage! When I used to wear heels regularly I’d get every new pair reinforce with metal protectors. These places are also able to repair bags, belts, jewellery...
Buy out of season! Even for dc on basics. I didn’t pay full price for a winter coat for Dd until she was into teens. Get swimsuits and sandals in jan sales, get winter coats, tights and boots in the Easter sales WAY cheaper and as an adult your size rarely changes much if at all, certainly shoe size rarely changes.
A few years ago I gave up buying “fancy” socks and mine are all black now so interchangeable so if lost or holes appear you’re not “losing” both - dd preferred white so all hers were white. Nobody notices anyway!
Phone/broadband - always shocks me how much people pay for this! I’m under £20 a month and have perfectly good service (I’m online almost all the time inc when asleep as I stream tv or have radio on to sleep to) this and good customer service too - plusnet. You may need a more expensive supply than me with 3 Dc but I’ll bet you can get it cheaper than you are currently
Mobile phone - I really think having the latest model is a waste of money. I’m an iPhone fan but when I “upgrade” I still only get the oldest model still being sold as new. BUT I also believe in PROTECTING my phone - I look after it! I ALWAYS have a case and protector on it, never have it near water or steam, don’t place it anywhere precarious etc I also believe in good quality insurance which IS worth paying for. I use Tesco, when I was also covering dd (who isn’t anywhere near as careful!) they were always so quick and no quibble with claims.
Because I look after my phones they last well beyond the contract for the unit so I switch to a sim only as soon as I can - this can be as cheap as £7.50 a month. Frankly if it weren’t for “planned obsolescence” (seriously look it up it’ll piss you off) I would still be using an iPhone 4!!
Debts - an overdraft is usually (especially now the rules have changed!) the most expensive and hardest debt to climb out of! Horrible things! Again - money saving expert! You may well be better off switching the debt to a 0% credit card or other loan - definitely look into this in more depth. I never allow myself to have an overdraft facility on my account and set alerts so my bank notifies me if funds are low and regularly monitor my account through the app- it’s so easy nowadays.
Haircuts - as I say I cut my own and cut dds when she was still home too. We’ve both had horrible experiences with hairdressers though so we prefer that. Dd now has her hair done by a friend who is a hairdresser but knows her and what her issues are (we both have curly hair which most hairdressers are crap with, Dd also has a disability so the chairs/sinks are uncomfortable for her and she can’t sit for long periods so needs to “stretch her legs” at points so when her friend does it they basically make an afternoon of it and dd takes a break after each “section” and they’ll just hang out, chat, have a cuppa etc). On the rare occasions I have bothered with a hairdresser quite honestly I’ve found the “old lady” ones are cheapest and better at listening!
Streaming services, hobbies etc - depending on what you use shop around, track down vouchers/loyalty offers, haggle where you can, learn where hobby items are sold on 2nd hand etc most clubs/societies like to help members out and be environmentally conscious now by passing on old clothes and equipment.
Be a savings hound - try and avoid paying full price for ANYTHING but especially luxuries like eating out.
Get loyalty cards for EVERY shop you buy from and keep an eye on the offers and use the ones that are suitable for you, banks often have similar schemes. I’m with hbos and they do an everyday offers scheme where you sign up and get cashback from collaborating companies - the current companies I have available are with: simply cook, sky, amazon kindle, Harvey nicks, lakeland, five guys...
When I used to take dd to places like pizza hut for a treat I never went unless we had a voucher of some kind, these places almost always have some kind of offer or voucher available.
“it comes in and I have no idea where it goes” there are apps for tracking spending - you have to be conscientious with it the way I found easiest was to get a receipt for EVERYTHING I bought even if it was just a can of soda, put straight in my purse then each evening go through the receipts and transfer info to app.
We’ve ALL made mistakes at times with finances but you can get to grips with this.