Liquidity vs solvency: what is the difference?

Liquidity asks whether there is enough cash today; solvency asks whether the balance sheet holds up. Accounting and bank regulation measure each with their own ratios.

In accounting, liquidity is how fast a firm can turn assets into cash to pay its short-term debts. A liquidity ratio measures it. The current ratio divides current assets by current liabilities; the quick ratio does the same but leaves out inventory. Working capital is current assets minus current liabilities. The accounting definition of liquidity therefore looks at the coming months only.

A solvency ratio, by contrast, looks at the whole balance sheet. The equity ratio divides equity by total assets, and the debt-to-equity ratio divides debt by equity. For example, a firm with a low current ratio and a high equity ratio has a cash problem while its capital is sound.

Liquidity is the cash a firm can reach at one moment; cash flow, profit and capital measure other things. Cash flow is the money that moves in and out over a period; liquidity is the stock available to pay at a given date. Profitability is another matter: a firm can book a profit on sales its customers have not yet paid for and run short of cash in the meantime.

Equity, or capital, is what is left for owners after all debts, and it absorbs losses. That makes it a solvency measure. Working capital, in turn, is one accounting measure of liquidity.

A bank can fail on either test. Under Article 32(4) of the EU Bank Recovery and Resolution Directive (Directive 2014/59/EU), a bank is failing or likely to fail when its assets are, or will soon be, "less than its liabilities", or when it is, or will soon be, "unable to pay its debts or other liabilities as they fall due". A further ground covers losses that deplete all or a significant amount of its own funds.

German insolvency law draws the same line. Under § 17 InsO, a debtor is illiquid when it cannot meet the payment obligations that are due. Under § 19 InsO, a legal person is over-indebted when its assets no longer cover its liabilities, unless its continuation over the next twelve months is more likely than not.

For a stablecoin issuer, liquidity is the power to redeem on demand and solvency is a reserve that covers every token. MiCA addresses both. Article 49(4) requires an e-money token issuer to redeem "at any time and at par value". Article 36(2) requires the reserve behind an asset-referenced token to be legally segregated from the issuer's estate, "so that creditors of the issuers have no recourse to the reserve of assets, in particular in the event of insolvency".

In Germany and Austria, the CRR sets the capital and liquidity ratios directly, and the BRRD applies through national law. In Germany, the Bundesbank and BaFin share banking supervision, and the Insolvenzordnung defines illiquidity and over-indebtedness. In Austria, the FMA supervises banks with the OeNB and is also the resolution authority (OeNB).

The line between the two also decides who gets emergency help. A national central bank of the euro area can grant emergency liquidity assistance (ELA), central bank money for "solvent financial institutions that are facing temporary liquidity problems" (ECB). For German banks that central bank is the Deutsche Bundesbank, whose head office is in Frankfurt am Main (Bundesbank).

Switzerland is outside the EU. There, the Capital Adequacy Ordinance sets the solvency rules, revised for the final Basel III standards from January 1, 2025 (FINMA, March 27, 2024). The Liquidity Ordinance sets the LCR and, since July 1, 2021, the NSFR (FINMA, November 12, 2020). FINMA supervises both. This page gives no legal advice.