Before you invest

Habit 1 of 3

Live below your limits

Your limit is what comes in each month after tax. Living below it means your regular spending settles at a level under that number, not at the number itself. Most people who have never invested are not overspending wildly. Their costs have quietly grown to match their pay, one subscription and one upgrade at a time, so the month always ends at zero. The fix is not a strict budget you abandon in February. It is knowing the real number, spotting the two or three costs that grew without a decision, and choosing a slightly lower level to live at. When pay rises later, keep living at the old level for a while and let the gap widen. That single habit, holding your spending still while income moves, is where most first investing money comes from.

How to do it

1. Write down what actually lands in your account each month, after tax and deductions. That is the limit, not your headline salary.
2. Go through one month of statements and sort every cost into needs, wants and money set aside. Most people find two or three costs they had forgotten they were paying.
3. Pick the level you will live at, a little under the limit. Cancel or shrink what does not earn its place. Start with the repeating costs, because a cut there repeats every month too.
4. When your pay rises, keep your spending where it was for a few months. The raise becomes the investing money before you get used to it.

Habit 2 of 3

Work out a comfortable monthly amount

Comfortable means two things at once. You can keep paying it every month without borrowing, and you could watch it fall in value for a year without touching it or losing sleep. Treat the amount as money you could lose. Markets drop, sometimes by a third, and the people who do well are the ones who kept paying in through the drop rather than the ones who chose the perfect amount. Several well known rules of thumb split take home pay into percentages for living costs, enjoyment, a rainy day pot and investing. None of them is right for everyone, and they disagree with each other, which is the point. They are starting lines. Pick the one that looks closest to your life, run your own numbers through it, and adjust. The rainy day pot is usually described in months rather than percentages. Three to six months of essential costs, kept in an account you can reach in a day, is the common guidance, and it is built before money you might need goes into anything that can fall in value.

How to do it

1. Take your monthly take home pay and apply one of the splits below. The investing share is your first candidate amount.
2. Check it against the worst month you can remember. If that month would have forced you to skip or borrow, lower the amount until it would not.
3. Ask whether you could see that money fall by a third for a year and leave it alone. If not, lower it again, or move part of it to the rainy day pot first.
4. Start smaller than you think and raise it every six months. A standing amount you never skip is worth more than a bold one you pause.

Splits people quote

Percentages of take home pay. They disagree with each other, which is why they are starting points rather than rules.

Habit 3 of 3

Pay yourself first

The order matters more than the amount. If investing money comes out of whatever is left at the end of the month, it competes with every small decision made during the month, and it loses. If it leaves the account the day pay arrives, everything else adapts to the smaller number without you noticing. This is the one habit that makes the first two stick, because it removes the monthly decision. Set up a standing order or an automatic transfer from your current account to wherever the money will sit, dated the day after payday. Send it to a separate account, even a plain savings account, so it is out of sight. Once the transfer has run for a few months without hurting, raise it. If a month goes wrong, pause it for that month rather than cancelling it, then restart.

How to do it

1. Set up an automatic transfer for the day after your pay usually lands, so the money leaves before bills and spending see it.
2. Send it to an account you do not use for spending. A separate savings account is enough to begin with.
3. Start with the amount from the previous step, or less. Raise it by a small fixed sum every time it has run comfortably for a few months.
4. If you must pause it, pause it for one month by name and restart. Cancelling is how the habit ends.