If you've gotten into a car accident, it's likely that your car doesn't look as good as it did before. Even if the crash has only caused external damage, it's still an unnecessary expense caused by unfortunate circumstances. This is why it might be a good idea to look at how much you can do yourself and how to keep the costs down for the project in general. If you have some experience in dealing with smash repairs, and you feel confident that you can do it without causing any further damage to your vehicle, you have plenty of options to keep costs down as low as you can.
Using a mechanic
Even if you've set out to do the repairs on your own, you should still consider having the car looked at by a professional. You should do this to rule out the possibility of internal damage that you haven't noticed yourself. Internal damage that is left unrepaired will render all of the external repairs that you do useless. If you do find out that there is internal damage in your car, you might want to have that fixed by the mechanic that you are consulting to make sure everything is done correctly. You can still do the external repairs yourself and thus save some money in the process.
Second hand spare parts
If you need to replace one or more part of your vehicle, like plastic panels or headlight covers, you might want to consider the option of first talking to a wreckers business that specialises in selling second hand spare parts. This is not as cheap as going to the scrap yard to find the parts yourself, but if you consult a company, they will have the parts arranged by car model and colour, which means that you can get the exact same part for your car that you've already lost. If they don't have the exact colour that you want, you might opt for spray painting the part so that it matches.
If you need to use specialised tools, like hammers especially created to work on the dents of a car, you should think about whether they're really worth purchasing or not. If you have more than one car and you enjoy spending time on car maintenance, then purchasing the tools will be more economical in the long run. Have a look in second hand tool shops or in car repair communities online to find already used tools that will cost you less than to buy everything new.
For assistance with smash repairs, talk to a professional.