The 50/30/20 method splits your monthly pay into needs, wants, and savings. Learn how to calculate it, see a sample budget for an IDR 7 million salary, and get tips for sticking with it.
The 50/30/20 method helps you divide your monthly income by priority. It works like this: 50 percent goes to essential needs, 30 percent to wants, and 20 percent to savings and investments. This split covers today’s needs without neglecting your financial security down the road.
Many people struggle to save because their money runs out before the end of the month. This rule sets a clear limit for each type of spending. Even beginners can start using it right away, with no complicated math.
How to Divide Your Monthly Income
The first category takes 50 percent of your net income for essential needs. This covers daily food, rent or a home loan payment, electricity, water, transportation, internet bills, and insurance premiums or BPJS (Indonesia’s national social security program). The total for this category should stay at or below 50 percent.
The second category sets aside 30 percent for wants. Examples include hanging out at cafes, clothes shopping, vacations, eating at restaurants, streaming subscriptions, movie tickets, and gadget upgrades. These expenses make life more comfortable, but they are not essential.
The third category puts 20 percent toward an emergency fund, retirement savings, education savings, and investments. Set this amount aside at the start of the month rather than from whatever is left after spending. That way, saving becomes a steady habit.
Follow these four steps to put it into practice:
- Add up your total monthly income, including base salary, allowances, bonuses, and any side income.
- Set a cap of 50 percent for needs, and pay your required bills first.
- Set a cap of 30 percent for wants so they don’t eat into the other categories.
- Set aside at least 20 percent at the start of the month for your emergency fund and investments.
Sample Budget for an IDR 7,000,000 Salary
This example uses a net income of IDR 7,000,000 per month. Under the 50/30/20 method, the needs category gets IDR 3,500,000. The breakdown is shown in the table below.
| Needs Category | Amount |
|---|---|
| Housing | IDR 1,200,000 |
| Food | IDR 800,000 |
| Transportation | IDR 400,000 |
| Electricity | IDR 300,000 |
| Miscellaneous | IDR 300,000 |
| Insurance | IDR 200,000 |
| Internet | IDR 200,000 |
| Water | IDR 100,000 |
| Total | IDR 3,500,000 |
The wants category gets 30 percent, or IDR 2,100,000. This is enough for dining out, shopping, entertainment, and vacations. You can still move amounts between categories as long as the total stays within the limit.
| Wants Category | Amount |
|---|---|
| Dining out | IDR 600,000 |
| Clothes shopping | IDR 500,000 |
| Entertainment (movie tickets, streaming subscriptions) | IDR 500,000 |
| Vacations | IDR 500,000 |
| Total | IDR 2,100,000 |
The savings category gets 20 percent, or IDR 1,400,000. The larger share goes to the emergency fund, and the rest goes to investments.
| Savings Category | Amount |
|---|---|
| Emergency fund | IDR 800,000 |
| Investments | IDR 600,000 |
| Total | IDR 1,400,000 |
Pros, Cons, and Tips for Using the Method
The method has three main advantages. The formula is easy to understand, it encourages regular saving, and it suits people who are just learning to manage their personal finances. Splitting your income by percentage also keeps spending under better control.
The method has limits in some situations. People with very low incomes often spend more than 50 percent on essential needs. People with very high incomes may need to save a larger share.
Changes in family status, such as getting married or having a child, also shift your spending. So adjust the percentages whenever your circumstances change. These tips can help the method work better:
- Track your daily and monthly cash flow with a budgeting app.
- Review your spending every month.
- Change the ratios when your income or family responsibilities change.
- Put the 20 percent into safe instruments that match your risk profile.
Start by calculating this month’s net income, then divide it using the percentages. After a month or two, you can judge whether the 50/30/20 method fits your financial situation.