Fiscal Policy vs Monetary Policy: Who Pulls Which Lever in Indonesia?
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6 min read
In 2026, Indonesia's budget plans to spend Rp3.842,7 triliun. In the same year, Bank Indonesia raised its rate by a full percentage point. Both are called "policy." Both try to steer the economy. But they are run by different people, with different tools. This post explains fiscal policy vs monetary policy in plain words, using Indonesia's own numbers, so you know which headline affects which part of your money.
Think of the economy as a car.
Fiscal policy is the government's hand. It decides how much to spend and how much to collect in tax. In Indonesia, the Finance Ministry (Kemenkeu) runs it through the state budget, called the APBN.
Monetary policy is the central bank's hand. It decides how expensive money is. In Indonesia, that is Bank Indonesia (BI), and its main tool is the BI Rate, the benchmark interest rate.
| Fiscal policy | Monetary policy | |
|---|---|---|
| Who | Government, Kemenkeu, DPR | Bank Indonesia |
| Main tools | Tax, spending, subsidies, government debt | BI Rate, reserve requirement (GWM), market operations |
| What it changes | How much money the state puts in or takes out | How costly it is to borrow and save |
| Speed | Can be quick (a spending program starts) | Slow to reach your loan (see below) |
The APBN is a yearly plan. Money comes in (taxes and other state income). Money goes out (salaries, subsidies, roads, programs). If spending is bigger than income, the gap is the deficit, and the state covers it by borrowing, mostly by selling bonds.
Here are the 2026 numbers, per the budget agreed between the government and the DPR budget committee in September 2025, as reported by Kontan and Fortune IDN:
| Item | 2026 budget target |
|---|---|
| Revenue | Rp3.153,6 triliun |
| Spending | Rp3.842,7 triliun |
| Deficit | Rp689,1 triliun (2,68% of GDP) |
Source: media reports of the agreed APBN 2026 (Kontan, Fortune IDN). We did not open the law text itself.
The Finance Minister now expects a wider gap. Purbaya has projected the full-year deficit at Rp734,3 triliun, or 2,85% of GDP, because spending is running above plan (reported by Infobanknews and IKPI). Through June 2026, the actual deficit was Rp196,5 triliun, or 0,76% of GDP, per Metro TV and Investortrust reports.
Indonesian law is widely reported to cap the deficit at 3% of GDP (State Finances Law 17/2003). Here is simple math to show how close that is. These are NetWort calculations, not official figures:
That is thin. It is why the deficit is a number bond investors watch. We covered how it feeds into yields in our post on Indonesia's budget deficit and bond yields.
Bank Indonesia does not spend or tax. It sets the price of money.
When BI raises the BI Rate, borrowing gets more expensive and saving pays more. That cools spending and helps hold up the rupiah. When BI cuts, the opposite happens.
Here is what BI did in 2026, as reported by Bisnis.com, Kontan and Kabarbursa:
A basis point is one hundredth of a percent. So 100 bps is 1%.
For the full process of how the board decides, see how Bank Indonesia sets its interest rate. For what the reserve requirement does, see the GWM explainer.
Sometimes the government and the central bank push opposite ways. In July 2026, Bisnis.com described exactly that: Kemenkeu was adding liquidity to banks while BI was tightening money. We could only read a search summary of that article, so treat the details as a pointer, not a finding.
Why does this matter to you?
Both sides say they work together. Kemenkeu and BI held a joint fiscal and monetary coordination meeting on 20 February 2026, and Purbaya has denied there is "fiscal dominance" (when government borrowing needs start to drive central bank decisions). Others still raise that risk. In the past, BI directly bought government bonds in a crisis arrangement; read our explainer on burden sharing to see how that blurs the line.
Here is a simple map. Use it to decide which headline to read.
Rather than guess, open NetWort's Macro page. It puts the BI Rate, inflation and the rupiah side by side, so you can see the monetary lever and its effects in one place. Check it the next time a policy headline lands.