Cash flow, budgeting and the savings rate

A budget is not a moral exercise. It is a measurement instrument for a single quantity: the gap between money arriving and money leaving, per unit of time. Everything else in personal finance sits downstream of that gap. The size of the buffer you can build, the speed at which debt clears, the amount that reaches a portfolio each month, the date at which work becomes optional — all of them are functions of one number.

The complication in Switzerland is that the number is unusually hard to read off a payslip. Gross salary, net salary and disposable income are three different things separated by deductions that behave differently, and one of the largest costs a Swiss household faces is not deducted at source at all.

Gross, net, and what is actually yours

Take an employee on CHF 120,000 gross. The payslip subtracts several items before anything reaches the bank account.

Old-age and survivors' insurance, disability insurance and the loss-of-earnings scheme (AHV/IV/EO) are levied at a combined rate split equally between employer and employee, with the employee share currently 5.3 percent and no upper income limit. On CHF 120,000 that is CHF 6,360.

Unemployment insurance (ALV) is levied at 1.1 percent for the employee on earnings up to the insured maximum of CHF 148,200 a year. On CHF 120,000 that is CHF 1,320.

Occupational pension contributions (pillar 2) depend on the plan, on your age and on the coordination deduction that reduces insured salary below gross salary. Suppose the employee share is CHF 7,200. Non-occupational accident cover (NBU) is typically charged to the employee at a small percentage; suppose CHF 800.

Deductions total CHF 6,360 plus CHF 1,320 plus CHF 7,200 plus CHF 800, which is CHF 15,680. Net salary is CHF 104,320.

Now the part that surprises people who have moved here. If you are taxed at source (Quellensteuer), income tax is withheld too and the net figure is closer to what you can spend. If you are taxed by ordinary assessment — Swiss citizens, C-permit holders, and anyone whose situation moves them out of withholding — no income tax comes off the payslip at all. It arrives later, as provisional instalments during the year and a final assessment after the return is filed. The gross-to-net calculation above is therefore not a disposable-income calculation. It is one step short.

From net salary to true disposable income

Continue the case. Suppose the combined federal, cantonal and communal assessment comes to CHF 12,000. That figure varies more than almost any other in Swiss household finance, because the cantonal and communal multipliers applied to the base tariff differ sharply, and moving one commune can change a bill materially at identical income. Health insurance is a further CHF 400 a month, CHF 4,800 a year, paid personally and not deducted anywhere. Rent at CHF 1,900 a month is CHF 22,800. Everything else — food, transport, phone, insurance, travel, going out — comes to CHF 30,000.

Total outgoings from net salary: CHF 12,000 plus CHF 4,800 plus CHF 22,800 plus CHF 30,000, which is CHF 69,600. Cash saved over the year is CHF 104,320 minus CHF 69,600, or CHF 34,720.

Three savings rates, and why you need all three

The savings rate is the quantity worth optimising, but the word is used for at least three different ratios and they differ by more than a rounding error.

Measured against net salary: CHF 34,720 divided by CHF 104,320 is 33.3 percent.

Measured against gross salary: CHF 34,720 divided by CHF 120,000 is 28.9 percent. The number is lower because the denominator now includes the social and pension deductions that never reached the account.

Measured economically, counting forced pension saving as saving: your own pillar 2 contribution of CHF 7,200 is money that increases your vested benefit, and so is the employer contribution, which under Swiss law must be at least equal to the employee's. Suppose the employer also puts in CHF 7,200. Total saving becomes CHF 34,720 plus CHF 7,200 plus CHF 7,200, which is CHF 49,120. The denominator must widen to match, to gross salary plus the employer's pension contribution: CHF 120,000 plus CHF 7,200, or CHF 127,200. The rate is CHF 49,120 divided by CHF 127,200, which is 38.6 percent.

The three figures differ because each answers a different question. The net-salary rate measures the discipline you exercise over money you actually control. The gross rate measures the fraction of your labour income that becomes wealth rather than consumption or tax. The economic rate measures total balance-sheet accumulation and is the one that connects to the net worth statement in the previous lesson. Use the net-salary rate for behaviour, the economic rate for planning.

Why the rate matters more than the amount

There is a clean relationship between the savings rate and the pace at which you build years of covered spending. If you save a fraction s of your net income, you spend 1 − s, so each year of work adds s / (1 − s) years of spending to the balance sheet, before any investment return.

At the 33.3 percent net-salary rate above, 0.333 divided by 0.667 is 0.50. Each year worked buys about half a year of spending. Check it directly against the case: annual spending is CHF 69,600 and annual saving is CHF 34,720, and CHF 34,720 divided by CHF 69,600 is 0.499. The rule reproduces the numbers.

The non-linearity is what makes this worth internalising. At a 20 percent rate the ratio is 0.20/0.80 = 0.25, a quarter-year bought per year worked. At 50 percent it is 0.50/0.50 = 1.00, a full year per year. Doubling the rate from 20 to 40 percent takes the ratio from 0.25 to 0.667, which is nearly a tripling, because the numerator rises while the denominator falls. A raise that is entirely consumed leaves the ratio unchanged no matter how large it is.

The Swiss cash-flow traps

Three features of the Swiss system regularly break otherwise sensible budgets.

Tax paid in arrears. Under ordinary assessment, the definitive bill for a year can be settled well after the year has ended, and provisional instalments during the year are based on the last known position. A large bonus, a job change into a higher bracket, or a pillar 3a withdrawal will show up in an assessment that arrives when the money is long spent. The fix is mechanical: open a separate account, standing-order an estimate of the annual tax into it every month, and treat that account as if it were not yours. It is the closest thing a Swiss household has to withholding.

The transition out of Quellensteuer. Receiving a C permit, or a change in marital status that ends withholding, means income tax stops coming off the payslip. Net pay jumps by a visible amount and the household quietly adjusts its spending upward. The bill has not disappeared; it has been deferred, and it will arrive as an assessment. Anyone going through that transition should redirect the entire increase into the tax account on the first payday and change nothing else.

Annual and semi-annual bills. Health insurance premiums reset each year with a notification in the autumn, and switching insurer requires a decision inside a narrow window. The franchise you choose — anywhere from CHF 300 to CHF 2,500 for an adult under basic insurance — trades a lower monthly premium for a higher potential outlay in a bad year, which is a cash-flow choice as much as an insurance one. The insurance lesson in this course treats the coverage question; here the point is only that lumpy annual bills must be smoothed into a monthly figure or they will always feel like emergencies.

How to actually run it

Two mechanisms beat willpower.

The first is paying yourself first. On the day salary lands, a standing order moves the target saving amount out of the current account into a savings account, an investment account, or pillar 3a. What remains is the spending budget. This inverts the usual failure mode, in which saving is whatever survives the month, which is a residual and therefore always small and always variable.

The second is separating accounts by function. One account receives salary and pays fixed costs. One holds the tax reserve. One holds the buffer. One is for discretionary spending, and it is the only one attached to a card you carry. The effect is that overspending becomes visible immediately, without any tracking effort, because a balance you can see approaches zero.

For measurement, categorise at the level of decisions, not receipts. Rent, insurance, transport passes and telecom are fixed: you change them once a year at most, and each change is worth a real amount. Groceries, eating out, travel and shopping are variable, and this is where a rolling twelve-month average matters far more than any single month. A month with a flight and a dentist looks like a disaster and is usually noise. A twelve-month average that has drifted 15 percent higher is a signal.

Review quarterly, on the same date you update the net worth statement. Ask three questions: has the twelve-month average of variable spending moved, did any fixed cost change, and did the savings rate hold. Three questions is enough. A budget that requires a weekly ritual will be abandoned inside a year, and an abandoned budget measures nothing.

What to take away

• Gross minus payslip deductions gives net salary, but for anyone taxed by ordinary assessment that is still one step short of disposable income, because income tax is paid later out of that net figure.
• The same household produces three different savings rates — on net salary, on gross salary, and economically including both sides of the pillar 2 contribution — and each answers a different question, so state which one you mean.
• Each year of work adds s / (1 − s) years of spending to your balance sheet, which is why moving from a 20 percent to a 40 percent rate nearly triples the pace rather than doubling it.
• Hold a dedicated tax reserve account funded monthly; the Swiss arrears system and the exit from Quellensteuer both deliver bills long after the income that caused them was spent.
• Track variable spending as a rolling twelve-month average and review quarterly; a single expensive month is almost always noise and reacting to it corrupts the measurement.

Sources

• Federal Social Insurance Office (BSV/OFAS), contribution rates and insured-earnings ceilings for AHV/IV/EO and ALV.
• State Secretariat for Economic Affairs (SECO), unemployment insurance contribution and benefit rules.
• Federal Act on Occupational Old Age, Survivors' and Invalidity Pension Provision (BVG/LPP), Art. 66, on the employer's obligation to contribute at least as much as the employee.
• Swiss Federal Tax Administration (ESTV/AFC), Steuerinformationen dossier, chapters on taxation at source and on the ordinary assessment procedure.
• Federal Office of Public Health (BAG/OFSP), rules on basic health insurance premiums, franchises and the annual switching window.
• Swiss Federal Statistical Office (BFS/OFS), Household Budget Survey (HABE), for the composition of Swiss household spending.
• Vicki Robin and Joe Dominguez, Your Money or Your Life, for the framing of spending in units of life energy and the savings-rate-to-freedom relationship.
• Richard H. Thaler and Cass R. Sunstein, Nudge, on default settings and automatic contribution mechanisms in household saving.