die Anhebung
increase
The increase of a value, level, or amount, for example prices, salaries, taxes, or interest rates.
Die Gewerkschaft fordert eine Anhebung der Löhne um fünf Prozent.
The union is demanding an increase in wages of five percent.

increase / raising
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increase
The increase of a value, level, or amount, for example prices, salaries, taxes, or interest rates.
Die Gewerkschaft fordert eine Anhebung der Löhne um fünf Prozent.
The union is demanding an increase in wages of five percent.

'Die Anhebung' (the increase/raising) is the nominalization of the separable verb 'anheben' (to raise). The verb literally means 'to lift something upward' and also transfers this idea to abstract values.
Der Kran hebt die schwere Last an.
The crane lifts the heavy load.
You can tell whether the financial or the physical meaning is intended from the object. With abstract things like 'Preise' (prices) or 'Gehälter' (salaries), it is about an increase. With concrete objects like 'Brücke' (bridge) or 'Last' (load), it is about physical lifting.
Die Anhebung der Zinsen soll die Inflation bremsen.
The increase in interest rates is intended to slow inflation.
In the abstract meaning, 'Anhebung' (increase) is often used with the genitive to say what is being increased. Typical examples are: 'die Anhebung der Preise' (the increase in prices), 'der Gehälter' (of salaries), 'der Steuern' (of taxes), or 'des Niveaus' (of the level).
Eine Anhebung der Mieten ist für nächstes Jahr geplant.
An increase in rents is planned for next year.
In the physical meaning, 'Anhebung' (raising) is often used in technical or formal contexts. It describes the controlled, often mechanical process of lifting something up.
Die Anhebung der gesamten Dachkonstruktion war ein komplexes Manöver.
The raising of the entire roof structure was a complex maneuver.
increase / rise
'die Erhöhung' and 'die Anhebung' can both mean that a value, an amount, or a level becomes higher. 'Erhöhung' is very general and fits well with prices, salaries, taxes, or fees. 'Anhebung' sounds somewhat more official and is often used when a limit, rate, or level is deliberately raised. Learners can easily confuse the words because they fit similarly in many sentences. As a simple guide: 'Erhöhung' is more neutral and more common in everyday language, while 'Anhebung' is more suited to official decisions or fixed values.

Die Stadt plant eine Anhebung der Parkgebühren ab Januar.
The city is planning an increase in parking fees starting in January.
Im Gespräch geht es um die Erhöhung der Krankenkassenbeiträge.
The discussion is about the increase in health insurance contributions.