Bootstrapping

What is bootstrapping?

Bootstrapping (German Finanzierung aus eigener Kraft) refers to building and growing a company without external equity providers, that is, without investors who receive shares in the company for their money. It is financed from the founders' own funds, from revenue and customer prepayments, and from profits that stay in the company. In the narrow sense, the company also does without loans. In the broader, more common sense, the term includes bank financing and public funding, as long as no shares go to third parties. The name goes back to the English idiom of pulling oneself up by one's own bootstraps; in German, the corresponding image is pulling oneself out of the swamp by one's own hair.

The term describes a financing strategy, not a legal form and not a company phase. For startups, bootstrapping usually means a deliberate decision to forgo venture capital in the first years. It becomes relevant to transactions when a company takes in external capital for the first time after years of self-financed growth. Then a grown cost structure, a simple shareholder base and often sparse planning documents meet investors who demand preferential rights, reporting obligations and reliable growth planning. These rights are set out in the investment agreement and in the shareholders' agreement of the first round.

Sources of financing in bootstrapping

• Founders' own funds: share capital, payments into the capital reserve (additional payments into equity without new shares) and shareholder loans. Loans from shareholders rank behind other claims in insolvency (Section 39(1) no. 5 of the German Insolvency Code, Insolvenzordnung, InsO) and are regularly examined in the first funding round.
• Revenue and prepayments: Annual fees that fall due at the start of the contract term bring liquidity before the service has been delivered. In the balance sheet, they are deferred and become income only over the term.
• Services business: Many companies initially finance product development through consulting or development contracts and later shift the focus to the product.
• Management of current assets: Short payment terms towards customers and longer ones towards suppliers shorten the time for which capital is tied up.
• Public funding and debt capital: Grants, development loans or an overdraft facility supplement self-financing without dilution. In the narrow understanding of the term, however, loans do not belong here.

Capital efficiency and growth pace

Without external capital, the surplus earned determines the pace of growth. Every hire and every marketing expense has to be carried by current income. This forces reliable unit economics early on: customer acquisition costs that pay back within a manageable time, prices that reflect the value of the service and a cost base that follows demand. Many self-financed companies therefore reach early a state in which they can become profitable without new capital (default alive).

The price for this is slower growth. In markets in which size or network effects decide success, a well-capitalised competitor can gain market share faster than a self-financed company can follow. Bootstrapping is therefore particularly suited to business models with low upfront capital and early willingness to pay on the part of customers, such as specialised software for business customers. For projects with a long development time before the first revenue, such as in medical technology or new hardware, it is generally not sufficient.

Tax effect of retained profits

Profits of a GmbH (German limited liability company) are subject to corporate income tax (as of 2026: 15%) plus solidarity surcharge and trade tax (Gewerbesteuer). What remains in the company after tax is fully available for growth. Further tax arises at shareholder level only upon distribution, in principle flat-rate withholding tax (Abgeltungsteuer) for shares held privately. If a founder holds the shareholding through a holding GmbH, distributions there are, in effect, 95% exempt from corporate income tax (Section 8b of the German Corporation Tax Act, Körperschaftsteuergesetz, KStG). A prerequisite is a shareholding of at least 10% at the beginning of the calendar year. For trade tax, a separate minimum shareholding of 15% at the beginning of the year applies.

Consequences for valuation and negotiating position in a later round

A profitable, self-financed company negotiates without time pressure. It can reject an offer without endangering its continuation, and it can place the round at the time when key figures and market conditions are most favourable. The shareholder base is manageable, and there are no liquidation preferences or anti-dilution rights of earlier investors. The first round can therefore be set up directly as a Series A, that is, as the first larger funding round with professional investors. Growth financing (growth capital) for already established companies is also possible. Both forms can be combined with the sale of part of the founders' shares to the new investors.

The valuation does not rise merely because time passes without financing, however. An additional year increases the value only if revenue, margin or customer retention grow during that time. Venture capital funds measure a company above all by its growth. If a self-financed company grows profitably but slowly, it is more likely to be valued on its earnings than on a revenue multiple, that is, a multiple of revenue. It then appeals more to growth and minority investors. A benchmark that combines growth and profitability is the Rule of 40.

What stands out in due diligence

In due diligence, the investors' detailed examination, it often stands out that self-financed companies pay the founders salaries below market level. For the valuation, investors therefore adjust the result for a market-standard managing director's salary. This can reduce the reported profit (adjusted EBITDA, earnings before interest, taxes, depreciation and amortisation after adjustment for special effects). Further typical examination points are the documentation of shareholder loans, the deferral of prepayments and controlling that has so far served only the founders.

Worked example: bootstrapping or a seed round before Series A

Two software companies with the same recurring revenue raise a Series A of EUR 5 million. Company A has financed itself until then. Company B previously raised a seed round, an early round with smaller amounts. Pre-money denotes the valuation before, post-money the valuation after the inflow of the new capital.

• Company A at EUR 20 million pre-money: post-money EUR 25 million, new investors 5 / 25 = 20%, founders 80%; value of the founders' stake 80% × EUR 25 million = EUR 20 million
• Company B, seed round: EUR 1.5 million at EUR 6 million pre-money, that is, 1.5 / 7.5 = 20% for the seed investors
• Company B in the Series A, also at EUR 20 million pre-money: founders 100% × 0.8 × 0.8 = 64%; value 64% × EUR 25 million = EUR 16 million
• Variant: Company A grows more slowly and receives only EUR 14 million pre-money: post-money EUR 19 million, new investors 5 / 19 ≈ 26.3%, founders ≈ 73.7%; value ≈ 73.7% × EUR 19 million ≈ EUR 14 million
• Threshold: Since the founders of A hold all the shares before the round, the value of their stake equals the pre-money valuation. If it is above EUR 16 million, they are better off than the founders of B

Self-financing therefore pays off only if the valuation does not fall by more, because of slower growth, than the avoided dilution is worth. The example does not take into account the preferential rights of B's seed investors or the time gained that the seed round may have given B.

Distinction: bootstrapping, camel, revenue-based financing and zebra

• Camel: a capital-efficient growth company that does take in external capital but uses it sparingly. Bootstrapping dispenses with external equity providers.
• Default alive: describes a state in which a company reaches break-even with the funds it has. Bootstrapping is the financing strategy that forces this state early.
• Revenue-based financing: external capital that is repaid from a share of revenue. It does not dilute but is debt financing and therefore not bootstrapping in the narrow sense.
• Zebra: a company that combines profit and social benefit. Many such companies finance themselves wholly or partly from their own resources, but the term is aimed at the company's purpose.
• Bootstrapping in statistics and computer science: technical terms of the same name with no connection to corporate finance. In statistics, the bootstrap method estimates the spread of a result by repeatedly drawing samples with replacement from the same data. In computer science, the term refers to starting a system via a small start-up program that loads the further programs.

Common mistakes

• Growth subordinated to caution. In markets in which size decides, growing too slowly costs market share that cannot be won back later even with capital.
• Capital need recognised too late. Anyone who looks for external capital only when liquidity becomes tight gives up the most important advantage of self-financing: the freedom to reject an offer.
• Founders' salaries not adjusted. Salaries below market level make profitability look better than it would be with a fully paid management team.
• Shareholder loans without documentation. If there are no contracts on interest, term and ranking, investors demand clarification before the round, often conversion into equity.
• Prepayments mistaken for income. Annual prepayments increase liquidity but are not yet earned. A plan that shows them as revenue of the month of payment overstates the result.
• Reporting not prepared. After the round, investors expect regular reports on revenue, liquidity and key figures. If monthly closing and planning are missing, this already delays due diligence.

Frequently asked questions

What are the advantages and disadvantages of bootstrapping?

The most important advantage is independence: the founders keep all shares and control, and the company learns early to handle prices and costs with discipline. Disadvantages are slower growth, a higher personal risk for the founders and the danger of losing market share in markets with well-capitalised competitors.

Does bootstrapping rule out bank loans?

Not necessarily. In the narrow sense yes; in the broader, more common sense no. What matters is that no external shareholders are admitted, because loans and public funding do not dilute.

Does the valuation rise the longer a company grows without investors?

Only if revenue, margin or customer retention increase during that time. A year without progress tends to lower the value, because competitors catch up and the market changes.

When is the right time for external capital?

When it has been shown that additional capital accelerates growth economically. This is the case when customer acquisition costs pay back reliably and the bottleneck lies in capital, not in the product or in sales.

Can self-financed companies raise a Series A directly?

Yes. Companies with demonstrated revenue growth not infrequently skip the seed phase. Prerequisites are a plan that shows what the capital will be used for and documents that withstand due diligence.

Is public funding compatible with bootstrapping?

Yes. Grants and development loans require no shares. Funding conditions such as own contributions, proof of use and clawback risks do, however, belong in the liquidity plan.

The Roemer Capital view

Self-financed companies often go into a first round of EUR 1 million or more from a position of strength: profitable, with a simple shareholder base and without time pressure. We use this position and make sure that, when the process starts, there is a capital runway of 12 to 18 months, so that the freedom to say no remains credible. In the financial model, we adjust the result for market-standard salaries and show, in the base case, the cautious case and the optimistic case, what additional growth the capital makes possible.

The first institutional round brings preferential rights, consent reservations and reporting obligations that are new to founders without investor experience. We prepare them for this, calculate the effect of individual terms and negotiate them with them. The contractual implementation lies with the company's law firm.