Profit and spendable money are not the same thing. The businesses that stay cash-poor even while growing are usually the ones that never separated the two — every rupee that comes in gets treated as available, until a tax instalment or a slow month arrives and there is nothing set aside for either.

A fixed split, decided before the money arrives rather than after it has already gone, is the simplest way out of this. The one we use with clients: 40% saved, 40% reinvested in the business, 20% spent.

The split

ShareWhat it covers
Save40%Tax provisioning, an emergency reserve, and the capital for a decision that cannot wait on a bank
Reinvest40%Inventory, hiring, marketing, tools — whatever compounds the business itself
Spend20%What you actually take home and live on

Applied to profit, not revenue — GST collected on a sale and the cost of what was sold were never yours to split in the first place. And this is a starting discipline, not a rule of law: your own margin, stage and cash position should move it, sometimes considerably.

₹20 of every ₹100
is what a disciplined owner is actually free to spend. The rest was already spoken for — as reserve or as reinvestment — whether or not a rule says so.

Why save 40, and not less

This bucket does two jobs that get confused for one. The first is tax — advance tax instalments, GST payments, the TDS you deduct on your own payments — money that already belongs to the department the moment it is collected or earned, whatever it looks like sitting in your account. The second is a genuine reserve: two to three months of fixed costs, so a slow quarter is an inconvenience and not a crisis.

Most cash-flow trouble we see is not a revenue problem. It is this bucket being treated as available, spent on something else, and then not being there when the instalment or the lean month arrives.

Why reinvest 40, and not more

Reinvestment is inventory, a hire, marketing spend, a tool that saves hours every week — anything that makes next year's ₹100 larger than this year's. The discipline here runs the other way from savings: the temptation is to overfund it, plough everything back in and pay yourself last, which works until the business needs you to keep showing up more than it needs the extra capital.

Forty percent is generous enough to compound steadily without requiring the business to be your only source of income indefinitely.

Why spend only 20

Owner draw is the bucket most likely to expand quietly. Revenue goes up, and the amount taken home goes up with it — not because the business decided that, but because nothing stopped it. Fixing the personal draw at a percentage of profit, reviewed periodically rather than adjusted every good month, keeps lifestyle growth a step behind business growth instead of ahead of it.

The split matters less than having one at all, decided before the money arrives rather than after it has already been spent.

A worked example

Annual profitSave (40%)Reinvest (40%)Spend (20%)
₹10,00,000₹4,00,000₹4,00,000₹2,00,000
₹50,00,000₹20,00,000₹20,00,000₹10,00,000

The ratio holds at both sizes, though at the higher end the case for shifting a few points — toward reserve, or toward a deliberate expansion — gets stronger. It stops being a rule of thumb and starts being worth an actual conversation.

Where the ratio should actually move

Adjust it, don't discard it

  • Early-stage or growing fast — shift toward reinvestment, something closer to 30 save / 50 reinvest / 20 spend, for a defined period with a defined end.
  • Seasonal or irregular revenue — shift toward reserve. The 40% savings figure was built for steady income; a business with two strong quarters and two weak ones needs a thicker cushion.
  • Stable, mature and already well-capitalised — the spend bucket has room to move, but move it as a decision, not as a drift.
  • Carrying business debt — reserve comes first. Debt service is not optional in the way reinvestment is.

The mistake this fixes

The businesses that get into trouble rarely spend recklessly. They spend reasonably, every month, out of an account that never had a rule attached to it — so revenue, GST collected, and actual profit all sat in the same pool, treated as equally available. By the time the difference matters, the money that should have covered it has usually already gone somewhere ordinary.

A fixed split does not ask for more discipline than most owners already have. It just asks for the rule to be decided once, rather than decided fresh every time money arrives.

PG

CA Parth Garg

Parth is a Chartered Accountant and the founder of GoTaxHub. He advises owner-managed businesses on structure, systems and the decisions that come with growth.

This article is general guidance as at 26 September 2026 and is not advice on any specific situation. The 40-40-20 split is a starting rule of thumb, not a rule of law — the right numbers for your business depend on your margin, stage and cash position. Please obtain advice on your own facts before acting.