Short, memorable, and directly uses core keywords. 'Inherit' is a common shortening of 'inheritance' and 'taxcalc' clearly indicates the calculator function. Easy to brand.
Domain availability: Available
Price: $11.06
Uses 'estate' which is strongly associated with inheritance, and 'valuator' which implies calculation and evaluation. Slightly broader than just tax, but good related term. Good for a more sophisticated brand.
Domain availability: Available
Price: $12.50
Uses 'legacy' which is a more emotive term related to inheritance, and 'estimator' which is a synonym for calculator. .org TLD suggests an educational or non-profit focus, which could be a good niche.
Domain availability: Available
Price: $6.86
More direct and conversational tone, using 'my inheritance' makes it personal. '.co' TLD is acceptable for a company.
Domain availability: Available
Price: $10.61
Uses 'inheritance' clearly, 'pro' implies professionalism or expertise, and calc shows calculation. '.uk' TLD is a location specific TLD for the UK. Good if targeting specifically UK market.
Domain availability: Available
Price: $5.66