I am not a lawyer, and I am not an expert, but I have some firsthand experience.
All my personal experience is limited to the U.S. The following is not advice and is for entertainment purposes only.
You don’t need to fish for life insurance. The insurance industry has a policy locator service that can be used to find out if a deceased had life insurance. Details can be found here.
http://www.mibsolutions.com/lost-life-insurance/
I have not personally used that service, it is just something I stumbled across and filed away in my memory. I think there is a nominal cost involved. I do not know if it is guaranteed to find every policy that a person has. Basically, I am just pointing it out as a possible resource.
Also, it is helpful to keep the deceased’s mailing address valid (if possible) for at least a year. Annual life insurance premium payment notices, bank statements for CDs, 1099s indicating the existence of investments that otherwise do not generate paper notices, annual bills for safe deposit boxes, etc., and other important clues will eventually come in the mail. Also check the details of credit card statements to see if there are any payments to insurance companies there.
Basically, the estate is responsible for debts. The few wills that I have seen call for the estate to pay for the deceased’s final arrangements (burial, etc.) first. Credit card debt and other unsecured debt does not pass on to heirs in the U.S. The estate is responsible.
Along with the death certificate, if you are the executor, you frequently need something called “letters of office” or something like that. It is a court-issued document that says you are the executor, if my memory serves me correctly. The probate lawyer will get this for you.
The executor will have to discuss things with a lawyer (and the estate can pay for that, as well), but once the process is familiar a reasonably competent executor can handle simple things like closing the deceased’s accounts, etc. without a lawyer directly overseeing each step of the process. The will may even make provisions for the executor to receive payment for services.
If the estate is of any size, an inventory of assets will have to be made.
If the estate does not have enough in assets to pay for a funeral and you personally cannot or do not want to pay for a funeral, then you would discuss the matter with other family members. Either someone or a some number of people will step up, or you will all come to the realization that having a fancy funeral (or even “having a funeral”) for the person in question is not that important to anyone.
I am sure funeral homes are used to people not having thousands of dollars on hand to pay right away, and will be able to suggest some sort of billing or financing arrangement.
If you are in the U.S., social security will pay a $255 death benefit. It’s not much, but better than a poke in the eye with a stick.
Don’t let credit card companies or creditors try to bully you into paying the deceased’s unsecured debts if the estate is not large enough to pay them. Unscrupulous creditors may say you have an obligation to pay when you don’t, or that it is a matter of honor, or anything else if they think they can cajole you into paying off the deceased’s debts.