If you are buying an existing business as a way to avoid the uncertainties of the startup phase, you’ll need to do “due diligence” on it before committing yourself and your investors to the deal. So, what is due diligence?

Essentially it’s the process of going through the books, examining current trading information, details of investment plans, commitments and liabilities. It should give an indication of any flaws in the setup, any skeletons in the cupboard.

For a listed company, it can ensure that shareholders receive the highest price and set off an auction process. It is disruptive to the target company which has no certainty that anything at all will come of the process.

Most companies like to keep closed books so that sensitive information doesn’t fall into the hands of rival firms who may just be fishing for confidential data.

The system isn’t foolproof either, in that investigating lawyers and accountants can run up huge bills without guarantee of accuracy.

Additionally, in the new world order, after Enron, we know that some companies have kept a second, secret set of accounts.

But for buying small-to-medium businesses, it would be unthinkable to go ahead without some form of due diligence, if only by the prospective buyers themselves.

The type of premises any business will need depends on the kind of business it is. For example, if you run an internet business, your shopfront will be your websites. You can run it from a spare corner in your bedroom, if that’s what you prefer.

Similarly, if it’s mail order most of the physical work may be handled by a fulfilment house that takes orders, stores your goods, sends them out and does all the paperwork. Mind you, you’ll pay between 40 and 60pc of your turnover for that sort of service.

Adrian Gavigan went the hard way when he decided to do it all himself for his mail order firm supplying Irish dance shoes. He has now moved into an 1,800 sq ft warehouse in Wembley, London and is looking for even more space. It seems there’s a strong demand for Irish dance shoes.

So, what do you look for in new business premises?

* You’ll should determine exactly what you need beforehand: shopfront? facilities to hand, utilities available, access to the premises, parking, and planning permissions.

* You’ll need a budget: legal costs, alterations and decoration, rent and service charges, business rates/taxes, maintenance and insurance.

* Many online commercial property sites and trade papers will direct you to a choice of properties.

* When you’ve found somewhere suitable, find a surveyor to inspect the site, and a solicitor to close the deal.

* Contact the local town hall about rateable values and taxes.

* If you are taking serviced offices, find out all the costs involved.

Remember, the key to choosing the right property for your business is to consider how you expect it to be doing in five years time and picking accordingly.

Here’s the last post in this series by our U.S. finance correspondent:

By now you’ve probably already heard that Social Security is in a little bit of trouble. There’s probably no need to panic, but you should understand that the younger you are, the more different it will probably be. Who knows exactly what will happen?

Hopefully, you’ve also taken the time to figure out what you’ll do to pay for things in retirement. Because Social Security may not be there, here are a few alternatives:

1. Win the lottery
2. Inherit from your rich aunt who only loves you
3. Marry rich
4. Save a little money for yourself

Of all these options, marrying rich is probably the best choice. However, if you want to play the odds (and stay on your current spouse’s good side), you should probably start saving money.

Nobody is going to do it for you. All it takes is for you to make the decision to start saving and investing. This is not rocket science, so keep it simple. Here’s the secret formula:

1. Figure out how much you’ll need to save
2. Save that much
3. Invest it adequately — you don’t have to knock the cover off the ball
4. Enjoy the present — don’t stress to much about the future

Now, you have to do it yourself, but you don’t have to do it by yourself. What’s the difference? You have to actually decide to take action, and take the money out of your budget each month. However, you can get help on steps 1, 3, and 4 (you might even get help on step 2 from your employer!). The Web is full of financial calculators and financial advice — some of it is even good advice. You can also get help from financial advisors and folks who’ve been down the road before you.

You should be careful about who you listen to, because there is some bad advice out there. I heard a great way to help weed out bad economists (but I can’t remember who said it), and I think it’s relevant to financial advice as well. She said something along the lines of: The more famous a person is, and the more certain they seem to be, the more likely it is that they’re wrong. Avoid anybody who makes broad general statements on what you always or never need, and watch out for financial hype.

That may seem an idle question since most people would answer: “In the local shopping mall”. But, if you’re reading The Money Blog, you would probably give a different reply. Here’s our U.S. finance correspondent to give his answer:

What should you do with your idle cash? Let’s say you’re responsible and you’ve accumulated an emergency fund. This is money that you can’t take risk with, but it would be nice to earn something on it, right? Depending on what you want, the world is full of options.

You can always leave it in a checking or savings account. Of course, you won’t earn much. Most brick and mortar banks are still paying almost nothing on deposits. However, the internet bank accounts make it more appealing. HSBC, INGDirect, and Capital One all have competitive rates these days – with no fees or minimum balance requirements. Whatever bank you use, make sure it’s FDIC insured.

You can also use money market funds. These are technically mutual funds that invest in short term issues. The advantage of a money market fund over a bank product is that the interest rate will likely change more rapidly (of course, that’s only an advantage if rates are going up and not down). The disadvantage of a money market is that there’s technically a possibility that you can lose your money if the underlying “money markets” fall apart. Read the fund’s prospectus to see what it invests in, and how you feel about that risk.

With a money market, you can sometimes get a checkbook to access your cash. They don’t like for you to write small checks, so they impose a minimum check size (like $500 per check). With a bank product, you usually link your account to a checking account and move money electronically when you’re ready to spend it. With either type of account, you can make deposits by check or electronically.

Which is better? It depends. Look them both over, compare rates, and figure out what suits your needs.