Friedrich August von Hayek, Addendum: Röpke’s Theory of Capital Formation

Hayek’s short journal book review, presented here in a 2013 English translation, assesses Wilhelm Röpke’s account of the sources and conditions of capital formation. Its movement is appreciative but discriminating: Hayek follows the pamphlet from its classification of capital formation through its analysis of saving to the question of whether an economy can save excessively. He praises Röpke’s clarity and practical relevance while challenging his treatment of credit creation and the grounds on which excessive saving might be identified.

The initial conceptual achievement is Röpke’s division of capital formation according to sources in real or monetary economics. Within the monetary category, he distinguishes saving, venture-capital formation or “self financing,” and forced accumulation through fiscal management or monetary policy. Hayek endorses this arrangement as useful both analytically and terminologically. Its importance is that capital accumulation does not constitute a single, undifferentiated process: different sources raise different questions about economic effects and acceptability.

The investigation of these different types leads Röpke to the conclusion, one which is well worth taking to heart today, that savings in the narrower sense still represents not only the chief but also the only unobjectionable source of capital accumulation.

This agreement supplies the review’s central evaluative commitment. Hayek nevertheless finds Röpke too lenient toward forced accumulation through monetary policy. More specifically, he rejects the claim that credit creation produces such accumulation only when prices rise. Newly created credit directed toward production temporarily increases demand for productive goods relative to consumer goods, thereby increasing capital. The conceptual move is from the general price level to the relative direction of demand: monetary intervention can alter the allocation of resources even without the price rise Röpke treats as its necessary condition.

Hayek then turns from the sources of accumulation to the determinants of saving. Here his approval rests on a distinction that prevents motivation from being confused with economic means:

After this, Röpke investigates very instructively the individual reasons for the scale of saving, distinguishing between the willingness and the capacity to save, and thereby avoiding certain confusions that frequently occur.

Röpke’s discussion connects saving with public prosperity, income, and the division of property. Hayek commends these explanations without reproducing them, so the review establishes their importance rather than supplying a detailed account of their mechanisms. His minor reservation about the illustrative diagram—a third dimension might clarify the relation between willingness and capacity—does not weaken his endorsement of the underlying distinction.

The final substantive issue is whether too much can be saved. Hayek accepts Röpke’s warnings where they concern capital formation induced by monetary policy, but doubts the suggestion that voluntary accumulation can itself produce overcapitalisation and eventual crisis. He then separates this causal question from a different possibility: saving might sacrifice present utility for a smaller future benefit. That possibility does not, however, furnish an objectively valid judgement about the economy as a whole.

Since interpersonal comparisons of utilities are in principle impossible, such a judgement could, however, be preferred only on the basis of a specified target of economic policy, and never—with objective validity—independently of such a target.

The distinction limits what economic analysis can establish. A claim that aggregate saving is excessive requires an explicit policy objective; it cannot be justified by treating different people’s utilities as directly comparable. Hayek thus differentiates monetary dangers, disputed claims about voluntary overcapitalisation, and evaluations dependent on chosen ends. He closes by recommending wider circulation of Röpke’s study, particularly for its treatment of foreign loans and taxation. The review’s relevance lies in this combination of analytical praise and precise reservation: explaining how capital forms does not by itself settle whether its formation is desirable or excessive.